CMAS CMAS Data Interpretation and Analysis 3

Question 1

A frequency table shows that 10 students scored 70–79, 15 scored 80–89, and 5 scored 90–99. What percentage of students scored 80 or above?

Accepted Answer

67%

Answer

33%

Answer

50%

Answer

75%

Question 2

What does the interquartile range (IQR) measure in a data set?

Accepted Answer

The spread of the middle 50% of the data

Answer

The difference between the maximum and minimum values

Answer

The average of all values

Answer

The most frequently occurring value

Question 3

A histogram shows the distribution of test scores. If the bars are tallest in the middle and shorter at both ends, what shape is the distribution?

Accepted Answer

Bell-shaped (symmetric)

Answer

Skewed right

Answer

Skewed left

Answer

Uniform

Question 4

A student records the daily high temperatures for a week: 72, 75, 68, 80, 77, 73, 79. What is the range of this data?

Accepted Answer

12

Answer

7

Answer

14

Answer

8

Question 5

Which type of graph would best display the proportion of a school's budget allocated to different departments?

Accepted Answer

Pie chart

Answer

Line graph

Answer

Scatter plot

Answer

Histogram

Question 6

In a box-and-whisker plot, where is the median represented?

Accepted Answer

By the vertical line inside the box

Answer

At the left end of the box

Answer

At the right end of the box

Answer

By the far end of the right whisker