NeSA NeSA Data Analysis & Statistics

Question 1

A set of test scores is: 72, 85, 90, 68, 85, 92, 75. What is the mode?

Accepted Answer

85

Answer

The mode is the value that appears most often; 85 appears twice while all others appear once.

Question 2

What is the median of the data set: 4, 7, 9, 12, 15?

Accepted Answer

9

Answer

When arranged in order, the median is the middle value; the third value is 9.

Question 3

A bar graph shows that 15 students chose math, 10 chose science, and 5 chose art. What fraction of students chose art?

Accepted Answer

1/6

Answer

Total students = 30; art fraction = 5/30 = 1/6.

Question 4

What type of graph is best for showing how data changes over time?

Accepted Answer

Line graph

Answer

Line graphs connect data points over time and clearly show trends and changes.

Question 5

A NeSA student's scores on 4 practice tests are 80, 90, 70, and 100. What is the mean score?

Accepted Answer

85

Answer

Mean = (80 + 90 + 70 + 100) / 4 = 340 / 4 = 85.

NeSA - Nebraska State Accountability Practice Test