CMAS CMAS Data Interpretation and Analysis 2

Question 1

Which graph type is best for showing how a quantity changes over time?

Accepted Answer

Line graph

Answer

Pie chart

Answer

Bar graph

Answer

Scatter plot

Question 2

A double bar graph compares the reading scores of boys and girls across three grades. What is the main advantage of using a double bar graph for this comparison?

Accepted Answer

It allows direct visual comparison of two groups side by side across multiple categories

Answer

It shows individual student scores

Answer

It displays data as percentages of a whole

Answer

It shows the relationship between two numerical variables

Question 3

A data set has values: 5, 7, 7, 9, 12. What is the mode?

Accepted Answer

7

Answer

8

Answer

9

Answer

12

Question 4

On a coordinate grid, a point is located at (3, –2). In which quadrant is this point?

Accepted Answer

Quadrant IV

Answer

Quadrant I

Answer

Quadrant II

Answer

Quadrant III

Question 5

A scatter plot shows points generally moving from the lower-left to the upper-right. What type of correlation does this show?

Accepted Answer

Positive correlation

Answer

Negative correlation

Answer

No correlation

Answer

Inverse correlation

Question 6

Which statistical question could be answered using data collected from a survey?

Accepted Answer

How many hours per week do 5th graders in our school spend reading?

Answer

What is the exact height of the Empire State Building?

Answer

How many seconds are in an hour?

Answer

What is the boiling point of water?