NJSLA NJSLA Data Analysis and Statistics

Question 1

A student recorded the following test scores: 72, 85, 90, 68, 95, 80. What is the median score?

Accepted Answer

82.5

Answer

80

Answer

85

Answer

83

Question 2

Which measure of central tendency is most affected by an outlier?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 3

A box plot shows a minimum of 10, Q1 of 20, median of 35, Q3 of 50, and maximum of 70. What is the interquartile range (IQR)?

Accepted Answer

30

Answer

60

Answer

25

Answer

35

Question 4

A scatter plot shows points trending upward from left to right. This indicates which type of correlation?

Accepted Answer

Positive correlation

Answer

Negative correlation

Answer

No correlation

Answer

Inverse correlation

Question 5

A survey of 200 students found that 60 prefer math. What percentage prefer math?

Accepted Answer

30%

Answer

25%

Answer

35%

Answer

40%

Question 6

Which display is best for showing the distribution of a single set of numerical data?

Accepted Answer

Histogram

Answer

Pie chart

Answer

Bar graph

Answer

Line graph