1.
The following are features to focus on when comparing data sets except...
Correct Answer
C. Amount
Explanation
When comparing data sets, the features to focus on are spread, center, and shape. The amount is not a feature to consider when comparing data sets. The amount refers to the quantity or number of data points in a data set, which does not provide any information about the distribution or characteristics of the data. Therefore, it is not relevant when comparing data sets.
2.
Where are dotplots positioned when they are used to compare data sets?
Correct Answer
A. They are positioned, one above the other.
Explanation
Dotplots are used to compare data sets by displaying the individual values as dots along a number line. When dotplots are positioned one above the other, it allows for easy visual comparison of the data sets. Each dotplot represents a different data set, and by positioning them vertically, it becomes clear how the data sets differ in terms of their distribution, central tendency, and variability. This arrangement also helps in identifying any overlapping or distinct patterns between the data sets.
3.
Quantitative data is information that can be...
Correct Answer
A. Measured and written down with numbers
Explanation
Quantitative data refers to information that can be measured and expressed numerically. This means that it can be assigned a numerical value and recorded. It is different from qualitative data, which is descriptive in nature and cannot be easily quantified. Therefore, the correct answer is that quantitative data can be measured and written down with numbers.
4.
Which of the following is NOT a quantitative data?
Correct Answer
A. The softness of your cat
Explanation
The softness of your cat is not a quantitative data because it cannot be measured or expressed in numerical terms. Quantitative data refers to information that can be measured or counted, such as the number of pennies, the age of your bike, or the amount of water in the ocean. However, the softness of your cat is a qualitative characteristic that is subjective and cannot be quantified.
5.
The following are methods of displaying quantitative data except...
Correct Answer
D. Center charts
Explanation
The given options are all methods of displaying quantitative data except for "Center charts". Center charts are not a commonly used method for displaying quantitative data. Dotplots, center plots, and line graphs are all commonly used methods for displaying quantitative data.
6.
The following are types of quantitative data except...
Correct Answer
D. Time
Explanation
The given answer, "Time," is the correct answer because time is not a type of quantitative data. Quantitative data refers to numerical measurements or calculations that can be expressed in terms of quantity or amount. Time, on the other hand, is a unit of measurement used to quantify the duration or sequence of events and is not considered a numerical value or quantity in itself.
7.
Which of the following is a source of quantitative data?
Correct Answer
A. Interviews
Explanation
Interviews are a source of quantitative data because they involve asking individuals a set of standardized questions and recording their responses in a structured manner. This allows for the collection of numerical data that can be analyzed statistically. By conducting interviews, researchers can gather quantitative information on various topics such as demographics, opinions, behaviors, and preferences.
8.
Secondary data consists of the following except...
Correct Answer
C. Future events
Explanation
Secondary data refers to data that has been collected by someone else for a different purpose. It includes sources like company reports, dairies, and written accounts, which are all historical records or documents. However, future events cannot be considered secondary data because they have not yet occurred and therefore cannot be collected or documented.
9.
Which of these displays the distribution of a quantitative variable while preserving the individual values?
Correct Answer
A. Stem and leaf
Explanation
The stem and leaf display is a graphical representation that shows the distribution of a quantitative variable while preserving the individual values. It organizes the data by separating the leading digit(s) (the stem) from the trailing digit(s) (the leaf). Each stem corresponds to a range of values, and the leaves represent the individual data points within that range. This display allows for easy identification of the shape of the distribution, the range of values, and the individual data points.
10.
If observations cover a wide range, the spread is...
Correct Answer
B. Larger
Explanation
The spread refers to the range of values observed in a data set. If the observations cover a wide range, it means that there is a large difference between the minimum and maximum values. Therefore, the correct answer is "Larger" as the spread is greater when the observations cover a wide range.