CHSPE Data Analysis 4

Question 1

A line of best fit on a scatter plot is used to:

Accepted Answer

Predict values and show trends in the data

Answer

A line of best fit (trend line) is used to identify trends and make predictions about data.

Question 2

The range of the data set {12, 15, 18, 22, 30} is:

Accepted Answer

18

Answer

Range = maximum − minimum = 30 − 12 = 18.

Question 3

Which sampling method gives every member of a population an equal chance of being selected?

Accepted Answer

Random sampling

Answer

Random sampling gives every member an equal chance of selection, reducing bias.

Question 4

A bar graph shows monthly rainfall. June had 3 inches, July had 5 inches, August had 4 inches. What was the average monthly rainfall for those three months?

Accepted Answer

4 inches

Answer

(3 + 5 + 4) ÷ 3 = 12 ÷ 3 = 4 inches.

Question 5

In a data set, an outlier is BEST described as:

Accepted Answer

A value far from the rest of the data

Answer

An outlier is a data point that lies significantly far from the other values in the set.

California High School Proficiency Exam Practice Test

California High School Proficiency Exam Practice Test

CHSPE Data Analysis 4