2.
The scatterplot above tells me the direction of the relationship between the two variables is :
Explanation
The scatterplot above shows a negative relationship between the two variables. This means that as one variable increases, the other variable tends to decrease. The points on the scatterplot are generally sloping downwards from left to right, indicating a negative correlation between the variables.
3.
The scatterplot above tells me the direction of the relationship between the two variables is :
Explanation
The scatterplot above shows a negative relationship between the two variables. This means that as one variable increases, the other variable decreases.
4.
The scatterplot above tells me the direction of the relationship between the two variables is :
Explanation
The scatterplot above shows a positive relationship between the two variables. This means that as one variable increases, the other variable also tends to increase. The data points in the scatterplot are generally moving in an upward direction from left to right, indicating a positive correlation between the variables.
5.
The scatterplot above tells me the direction of the relationship between the two variables is :
Explanation
The scatterplot above shows a positive relationship between the two variables. This means that as one variable increases, the other variable also tends to increase. The data points on the scatterplot are generally moving in an upward direction from left to right, indicating a positive correlation between the variables.
6.
The scatterplot above has a Coefficient of Determination of 34%. This tells me the strength and direction of the relationship between the two variables are:
Explanation
The Coefficient of Determination of 34% indicates that 34% of the variability in one variable can be explained by the other variable. Since the coefficient is positive, there is a moderate negative relationship between the two variables. This means that as one variable increases, the other variable tends to decrease, but the relationship is not very strong.
7.
The scatterplot above has an 'r' value of 0.58. This tells me the strength and direction of the relationship between the two variables are:
Explanation
The scatterplot above has an 'r' value of 0.58, which indicates a moderate positive relationship between the two variables. This means that as one variable increases, the other variable tends to increase as well, but not by a large amount. The strength of the relationship is moderate, suggesting that there is some consistency in the pattern of the data points, but it is not a strong or perfect relationship.
8.
The scatterplot above has an 'r' value of -0.94. This tells me the strength and direction of the relationship between the two variables are:
Explanation
The scatterplot above shows a strong negative relationship between the two variables. The "r" value of -0.94 indicates a strong negative correlation, meaning that as one variable increases, the other variable tends to decrease. Therefore, the answer is that the strength and direction of the relationship between the two variables are strong and negative.
9.
The scatterplot above has an 'r' value of -0.38. This tells me the strength and direction of the relationship between the two variables are:
Explanation
The scatterplot above has an 'r' value of -0.38, indicating a weak negative relationship between the two variables. This means that as one variable increases, the other variable tends to decrease, but the relationship is not very strong.
10.
The scatterplot above has an 'r' value of 0.44. This tells me the strength and direction of the relationship between the two variables are:
Explanation
The scatterplot has an 'r' value of 0.44, indicating a weak positive relationship between the two variables. This means that as one variable increases, the other variable tends to increase as well, but the relationship is not very strong.
11.
The scatterplot above has a Coefficient of Determination of 20%. This tells me the strength and direction of the relationship between the two variables are:
Explanation
The Coefficient of Determination measures the proportion of the variance in one variable that can be explained by the other variable. In this case, a Coefficient of Determination of 20% indicates that only 20% of the variance in one variable can be explained by the other variable. Therefore, the relationship between the two variables is weak. Additionally, since the Coefficient of Determination is positive, it suggests that there is a positive relationship between the variables, meaning that as one variable increases, the other variable tends to increase as well.
12.
The scatterplot above has a Coefficient of Determination of 14%. This tells me the strength and direction of the relationship between the two variables are:
Explanation
The Coefficient of Determination, also known as R-squared, measures the proportion of the variance in one variable that can be explained by the other variable in a linear regression model. In this case, since the Coefficient of Determination is 14%, it means that only 14% of the variance in one variable can be explained by the other variable. Therefore, the relationship between the two variables is weak. Additionally, since the Coefficient of Determination is positive, it indicates a positive relationship between the variables. Hence, the correct answer is weak, negative.
13.
The scatterplot above has a Coefficient of Determination of 89%. This tells me the strength and direction of the relationship between the two variables are:
Explanation
The Coefficient of Determination of 89% indicates that 89% of the variability in one variable can be explained by the other variable. Since the coefficient is high, it suggests a strong relationship between the two variables. The negative sign indicates that as one variable increases, the other variable tends to decrease, indicating a negative correlation. Therefore, the answer is that the relationship between the two variables is strong and negative.
14.
A scatterplot has a Correlation Coefficient of 0.68. This shows the strength and direction of the relationship is :
Correct Answer(s)
A. Moderate
A. Positive
Explanation
A correlation coefficient of 0.68 indicates a moderate and positive relationship between the variables plotted on the scatterplot. The strength of the relationship is not very strong but is still significant. The positive correlation suggests that as one variable increases, the other variable tends to increase as well. However, the degree of correlation is not high enough to be considered a strong relationship.
15.
A scatterplot has a Correlation Coefficient of 0.79. This shows the strength and direction of the relationship is :
Correct Answer(s)
A. Strong
A. Positive
Explanation
The correlation coefficient of 0.79 indicates a strong positive relationship between the variables in the scatterplot. A correlation coefficient ranges from -1 to +1, with values closer to +1 indicating a strong positive relationship. This means that as one variable increases, the other variable also tends to increase. Therefore, the given answer of "Strong, Positive" is correct.
16.
A scatterplot has a Correlation Coefficient of -0.68. This shows the strength and direction of the relationship is :
Correct Answer(s)
A. Moderate
A. Negative
Explanation
The scatterplot having a correlation coefficient of -0.68 indicates a moderate and negative relationship between the variables. This means that as one variable increases, the other variable tends to decrease, but the relationship is not very strong.
17.
A scatterplot has a Correlation Coefficient of -0.24. This shows the strength and direction of the relationship is :
Correct Answer
A. No Relationship
Explanation
The given correlation coefficient of -0.24 indicates a weak negative relationship between the variables. A correlation coefficient ranges from -1 to 1, where -1 represents a perfect negative relationship, 1 represents a perfect positive relationship, and 0 represents no relationship. Since the correlation coefficient is close to 0 and negative, it suggests that there is a weak negative relationship between the variables.
18.
A scatterplot has a Coefficient of Determination of 43% . This shows the relationship is :
Correct Answer
A. Moderate
Explanation
The coefficient of determination measures the proportion of the variance in the dependent variable that is predictable from the independent variable(s). In this case, with a coefficient of determination of 43%, it indicates that 43% of the variance in the dependent variable can be explained by the independent variable(s). This suggests a moderate relationship between the two variables, as there is a substantial amount of variability in the dependent variable that is not accounted for by the independent variable(s).
19.
A scatterplot has a Coefficient of Determination of 22% . This shows the relationship is :
Explanation
The Coefficient of Determination (R-squared) measures the proportion of the variance in the dependent variable that can be explained by the independent variable(s). In this case, a coefficient of determination of 22% indicates that only 22% of the variability in the dependent variable can be explained by the independent variable(s). This suggests a weak relationship between the variables, as a larger percentage would indicate a stronger relationship.
20.
The residual plot above tells me the relationship between the two variables is :
Correct Answer
A. Non Linear
Explanation
The residual plot above suggests a non-linear relationship between the two variables. This is because the residuals, which represent the difference between the observed and predicted values, do not follow a straight line pattern. Instead, they exhibit a curved or nonlinear pattern, indicating that the relationship between the variables is not adequately captured by a linear model.
21.
The residual plot above is :
Correct Answer
A. Not Random
Explanation
The residual plot above is not random because the residuals do not appear to be randomly scattered around the horizontal line of zero. There seems to be a pattern or trend in the residuals, indicating that the model may not be capturing all the important factors that influence the response variable.
22.
The residual plot above shows the relationship between the two variables is :
Correct Answer
A. Non Linear
Explanation
The residual plot above suggests a non-linear relationship between the two variables. This is indicated by the pattern of the residuals, which do not follow a straight line but instead show a curved or nonlinear pattern. This suggests that the relationship between the variables is not adequately captured by a linear model and that a non-linear model may be more appropriate.
23.
The residual plot above shows the relationship between the two variables is :
Correct Answer
A. Non Linear
Explanation
The residual plot above suggests a non-linear relationship between the two variables. This is because the residuals are not randomly scattered around the horizontal line, indicating that the relationship between the variables cannot be adequately described by a straight line. Instead, the residuals show a pattern or curvature, suggesting a non-linear relationship between the variables.
24.
The residual plot above is :
Correct Answer
A. Not Random
Explanation
The given answer "Not Random" suggests that the residual plot above does not exhibit a random pattern. In a residual plot, the residuals (the differences between the observed and predicted values) should ideally be randomly scattered around the horizontal line at zero. However, if the residuals display a clear pattern or structure, it indicates that the model is not capturing all the information in the data. In this case, the residual plot shows a systematic pattern, suggesting that the model is not a good fit for the data.
25.
The residual plot above is :
Explanation
The given residual plot is labeled as "Random" because the points in the plot do not follow any discernible pattern or trend. They are scattered randomly around the horizontal line, indicating that the residuals (the differences between the observed and predicted values) are randomly distributed. This suggests that the chosen regression model is a good fit for the data, as there are no systematic errors or patterns left in the residuals.
26.
The scatter plot above has the following features:
Correct Answer(s)
A. Linear Form
A. Positive Direction
A. A potential outlier
Explanation
The scatter plot above shows a linear relationship between the two variables, with a positive direction. This means that as one variable increases, the other variable also tends to increase. Additionally, there is a potential outlier in the data, which is a data point that deviates significantly from the overall trend. Non-linear form and no relationship are not applicable in this case.
27.
The scatter plot above has the following features:
Correct Answer(s)
A. Linear Form
A. Positive Direction
A. A potential outlier
Explanation
The scatter plot above shows a linear form, indicating a relationship between the two variables. The positive direction suggests that as one variable increases, the other variable also tends to increase. Additionally, there is a potential outlier present in the plot, which is a data point that appears to deviate significantly from the overall pattern. However, there is no evidence of a non-linear form or no relationship between the variables in the scatter plot.
28.
The scatter plot above has the following features:
Correct Answer(s)
A. Linear Form
A. Positive Direction
A. A potential outlier
Explanation
The scatter plot above shows a linear relationship between the two variables, with a positive direction. This means that as one variable increases, the other variable also tends to increase. Additionally, there is a potential outlier, which is a data point that does not follow the general trend of the other data points.
29.
The scatterplot above has an 'r' value of 0.54. This tells me the strength and direction of the relationship between the two variables are:
Correct Answer(s)
moderate, positive, moderate positive
Explanation
The given scatterplot has an 'r' value of 0.54, indicating a moderate positive relationship between the two variables. This means that as one variable increases, the other variable tends to increase as well, but not to a strong extent. Therefore, the strength of the relationship is moderate.
30.
A scatterplot has a Correlation Coefficient of 0.28. This shows the strength and direction of the relationship is :
Correct Answer(s)
A. Weak
A. Positive
Explanation
The correlation coefficient of 0.28 indicates a weak positive relationship. This means that there is a positive association between the variables, but it is not very strong. The closer the correlation coefficient is to 1, the stronger the relationship. Since the coefficient is only 0.28, it suggests a weak positive relationship between the variables plotted on the scatterplot.
31.
A scatterplot has a Coefficient of Determination of 34% . This shows the relationship is :
Correct Answer
A. Moderate
Explanation
A scatterplot with a Coefficient of Determination of 34% indicates a moderate relationship between the variables being plotted. The Coefficient of Determination, also known as R-squared, measures the proportion of the variation in the dependent variable that can be explained by the independent variable(s). In this case, 34% of the variation in the dependent variable can be explained by the independent variable(s), suggesting a moderate level of relationship between them.
32.
A scatterplot has a Coefficient of Determination of 78% . This shows the relationship is :
Explanation
A scatterplot with a coefficient of determination of 78% indicates a strong relationship between the variables being plotted. The coefficient of determination, also known as R-squared, measures the proportion of the variance in the dependent variable that can be explained by the independent variable(s). In this case, 78% of the variability in the dependent variable can be explained by the independent variable(s), suggesting a strong relationship between them.
33.
A scatterplot has a Coefficient of Determination of 6% . This shows the relationship is :
Correct Answer
A. No Relationship
Explanation
A scatterplot with a coefficient of determination of 6% indicates that only 6% of the variation in the dependent variable can be explained by the independent variable. This suggests that there is no significant relationship between the two variables. The scatterplot points are likely scattered randomly, without any clear pattern or trend.
34.
The residual plot above shows the relationship between the two variables is :
Explanation
The residual plot above shows a linear relationship between the two variables because the residuals are randomly scattered around the horizontal line at zero. This indicates that the linear regression model is a good fit for the data, as the residuals are evenly distributed and there is no clear pattern or trend in their distribution.
35.
The residual plot above shows the relationship between the two variables is :
Explanation
The residual plot above indicates that there is a linear relationship between the two variables. This can be observed by the residuals being evenly distributed around the horizontal line at zero, with no clear pattern or curvature. The linear relationship suggests that as one variable increases, the other variable also tends to increase or decrease in a consistent manner.
36.
The scatter plot above has the following features:
Correct Answer(s)
A. Linear Form
A. Positive Direction
A. A potential outlier
Explanation
The scatter plot above shows a linear relationship between the two variables, with a positive direction. This means that as one variable increases, the other variable also tends to increase. Additionally, there is a potential outlier, which is a data point that is significantly different from the others and may have an impact on the overall trend of the data.
37.
A scatterplot has a Correlation Coefficient of -0.79. This shows the strength and direction of the relationship is :
Correct Answer(s)
A. Strong
A. Negative
Explanation
The correlation coefficient of -0.79 indicates a strong negative relationship between the variables in the scatterplot. This means that as one variable increases, the other variable tends to decrease. The closer the correlation coefficient is to -1, the stronger the negative relationship. Therefore, the given answer of "Strong, Negative" is correct.
38.
A scatterplot has a Correlation Coefficient of -0.38. This shows the strength and direction of the relationship is :
Correct Answer(s)
A. Weak
A. Negative
Explanation
The given Correlation Coefficient of -0.38 indicates a weak negative relationship between the variables in the scatterplot. This means that as one variable increases, the other variable tends to decrease, but the relationship is not strong.
39.
A scatterplot has a Correlation Coefficient of 0.23. This shows the strength and direction of the relationship is :
Correct Answer
A. No Relationship
Explanation
The given correlation coefficient of 0.23 indicates a weak positive relationship between the variables in the scatterplot. A correlation coefficient of 0.23 is close to zero, suggesting that there is no significant relationship between the variables.
40.
The residual plot above is :
Explanation
The given residual plot is random because there is no clear pattern or trend in the distribution of the residuals. The residuals appear to be scattered randomly around the horizontal axis, indicating that the model's errors are not systematically related to the predictor variable. This suggests that the model is capturing the underlying relationship between the predictor and response variables adequately, without any significant biases or systematic errors.
41.
The residual plot above is :
Explanation
The residual plot above is random because there is no clear pattern or trend in the distribution of the residuals. The points appear to be scattered randomly around the horizontal line at zero, indicating that the model's errors are not systematically biased in any particular direction. This suggests that the model is capturing the underlying relationship between the variables adequately, as the residuals are evenly distributed and do not exhibit any discernible pattern.
42.
A scatterplot has a Coefficient of Determination of 20% . This shows the relationship is :
Explanation
A coefficient of determination of 20% indicates that only 20% of the variability in the dependent variable can be explained by the independent variable(s). This suggests a weak relationship between the variables, as a larger percentage would indicate a stronger relationship.
43.
A scatterplot has a Coefficient of Determination of 74% . This shows the relationship is :
Explanation
A scatterplot with a coefficient of determination of 74% indicates a strong relationship between the two variables being plotted. The coefficient of determination, also known as R-squared, measures the proportion of the variance in the dependent variable that can be explained by the independent variable(s). In this case, 74% of the variance in the dependent variable can be accounted for by the independent variable(s), suggesting a strong relationship between the two.
44.
The residual plot above is :
Correct Answer
A. Not Random
Explanation
The residual plot above is not random. This means that there is a pattern or relationship between the residuals (the differences between the observed and predicted values) and the independent variable(s). The residuals may be consistently positive or negative, indicating a systematic bias in the model's predictions. This suggests that the model may not be capturing all the relevant information or that there may be a missing variable that should be included in the analysis. Further investigation and potential model adjustments are needed to improve the model's accuracy.
45.
The residual plot above shows the relationship between the two variables is :
Explanation
The residual plot above shows a linear relationship between the two variables because the residuals are evenly distributed around the horizontal line at zero. This indicates that the model's predictions are consistently above or below the actual values by a constant amount, suggesting a linear pattern in the data.