Question 1

Which of the following best describes the difference between qualitative and quantitative data?

Accepted Answer

Qualitative data consists of names or labels, while quantitative data consists of numerical values.

Question 2

A researcher collects data on the nationalities of 100 students. Which type of graph would be most appropriate to visualize this data?

Accepted Answer

Pie chart

Question 3

Which of the following is a correct example of quantitative data?

Accepted Answer

Test scores

Question 4

A bar chart is used to display which type of data?

Accepted Answer

Qualitative data only

Question 5

Which of the following graphs would be most appropriate for displaying the distribution of test scores in a class?

Accepted Answer

Histogram

Question 6

A stemplot (stem-and-leaf plot) is best used for which type of data?

Accepted Answer

Quantitative data

Question 7

If you want to compare the frequencies of different eye colors in a classroom, which graph would be most suitable?

Accepted Answer

Bar chart

Question 8

Which of the following statements about pie charts is correct?

Accepted Answer

Pie charts show the proportion of each category as a part of a whole.

Question 9

A frequency polygon is constructed by plotting points corresponding to the frequencies of each class and then connecting the points with straight lines. What type of data is this most appropriate for?

Accepted Answer

Quantitative data

Question 10

Suppose you have the following test scores: 68, 72, 75, 80, 85, 90, 95. Which graph would best display the shape of this distribution?

Accepted Answer

Histogram

Question 11

Which of the following is NOT a correct use of a histogram?

Accepted Answer

Displaying the distribution of eye colors

Question 12

A Pareto chart is a special type of bar chart where the bars are arranged in which order?

Accepted Answer

Descending order of frequency

Question 13

Which of the following best describes the main purpose of a stemplot?

Accepted Answer

To display the distribution of a small set of quantitative data while preserving the original data values

Question 14

If a pie chart shows that 40% of survey respondents are from India, and the total number of respondents is 200, how many respondents are from India?

Accepted Answer

$$ 0.4 	imes 200 = 80 $$

Question 15

Which of the following is a key difference between a bar chart and a histogram?

Accepted Answer

Bar charts have spaces between bars, histograms do not.

Question 16

A frequency polygon is most similar to which other type of graph?

Accepted Answer

Histogram

Question 17

Which of the following is an example of qualitative data?

Accepted Answer

Nationality

Question 18

If you want to display the distribution of heights (in cm) of 50 students, which graph would be most appropriate?

Accepted Answer

Histogram

Question 19

Which of the following statements is true regarding the use of a stemplot?

Accepted Answer

A stemplot is best for small to moderate quantitative data sets.

Question 20

A teacher wants to compare the number of students in each nationality group in her class. Which graph should she use?

Accepted Answer

Bar chart

Visualizing Qualitative vs. Quantitative Data in Statistics

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