Statistical And Non-statistical Quiz
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What does the range of a data set tell you?
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The middle value
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The total of all values
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The difference between the highest and lowest values
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The average value
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Ready to test your number skills? Jump into our Statistical and Non-Statistical Quiz, designed to see how well you understand data and reasoning. This quiz is not just about simple math, it checks how well you can look at data, understand it, and use what you know to solve real-world problems.
You will answer questions on basic things like See moreaverages, finding the middle value in a list, and figuring out percentages. You will also check if you can spot trends or unusual numbers in a set of data and use your math and thinking skills to solve tricky problems. This quiz is great for anyone wanting to get better at analyzing data and solving problems.
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How do you calculate the mean of the data set 4, 8, 6, 10, 2?
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Add all numbers and divide by 5
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Multiply all numbers and divide by 5
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Subtract all numbers
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None of the above
Correct Answer
A. Add all numbers and divide by 5Explanation
To calculate the mean of the data set 4, 8, 6, 10, 2, add all the numbers together and divide by the number of items in the set. The sum is 4+8+6+10+2 = 30. There are 5 numbers in this data set. Therefore, the mean is 30 ÷ 5 = 6.Rate this question:
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- 3.
What is a non-statistical question out of the following?
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What is the average income of your city?
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What is your favorite color?
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How many cars pass by daily?
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How often do people shop?
Correct Answer
A. What is your favorite color?Explanation
A non-statistical question does not involve numerical data or require data analysis to answer. "What is your favorite color?" is a non-statistical question because it asks for a personal preference, which is subjective and does not involve analyzing numerical data.Rate this question:
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- 4.
Which term describes the likelihood of an event occurring?
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Probability
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Possibility
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Potentiality
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Prediction
Correct Answer
A. ProbabilityExplanation
Probability is the measure of the likelihood that an event will occur. It is quantified as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty. Probability helps in predicting the chance of various outcomes in processes or experiments where randomness or uncertainty is involved.Rate this question:
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- 5.
Which graph is best for showing the distribution of data?
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Line graph
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Histogram
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Pie chart
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Scatter plot
Correct Answer
A. HistogramExplanation
A histogram is ideal for showing the distribution of data because it visually represents the frequency of data points within specified ranges or bins. It helps in understanding the shape, spread, and central value of the data distribution, which are crucial for statistical analysis.Rate this question:
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- 6.
What is the median of the data set 3, 7, 9, 5, 12?
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5
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7
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9
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12
Correct Answer
A. 7Explanation
The median is the middle value in a data set when the numbers are arranged in order. For the data set 3, 7, 9, 5, 12, first arrange the numbers in ascending order: 3, 5, 7, 9, 12. With five numbers, the third number is the median. Hence, the median is 7, which is the middle value in this ordered list.Rate this question:
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- 7.
Which measure of central tendency is most affected by outliers?
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Median
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Mode
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Mean
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All are affected equally
Correct Answer
A. MeanExplanation
The mean, or average, is most affected by outliers because it is calculated by dividing the sum of all values by the number of values. Outliers, which are significantly higher or lower than most of the data, can skew the mean much more than they affect the median or mode, which are more robust measures of central tendency.Rate this question:
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- 8.
Which type of data is qualitative?
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Numerical data
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Ordinal data
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Categorical data
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Continuous data
Correct Answer
A. Categorical dataExplanation
Categorical data refers to qualitative data that can be separated into different categories distinguished by non-numeric characteristics. This type of data is not numerical and often includes characteristics like names, labels, or other descriptors, such as "red" or "blue" for color.Rate this question:
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- 9.
What method is commonly used to fill missing values in a dataset?
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Mean substitution
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Multiplication
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Correlation
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Mode substitution
Correct Answer
A. Mean substitutionExplanation
Mean substitution is a common method for handling missing values in a data set. It involves replacing missing values with the mean (average) of the available data. This method is used because it preserves the mean of the data set and minimizes the impact on the distribution.Rate this question:
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- 10.
In a set of data, 90% of the values are below 50. What is the 90th percentile?
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45
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50
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55
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60
Correct Answer
A. 50Explanation
The 90th percentile is the value below which 90% of the data points fall. In the provided scenario, if 90% of values are below 50, then 50 is the 90th percentile. This statistic is commonly used to understand the distribution of data points in terms of thresholds and benchmarks.Rate this question:
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Current Version
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Aug 26, 2024Quiz Edited by
ProProfs Editorial Team -
Jun 18, 2015Quiz Created by
Anthonycarty836