CHSPE Data Analysis 3

Question 1

A stem-and-leaf plot has stems 2, 3, 4 with leaves 2|5, 3|1 4 7, 4|0 2. What is the largest value in the data set?

Accepted Answer

42

Answer

The stem 4 with leaf 2 gives the value 42, which is the largest value shown.

Question 2

Which of the following best describes a sample that is representative of a population?

Accepted Answer

It reflects the diversity of the whole population

Answer

A representative sample reflects the characteristics of the overall population, allowing valid generalizations.

Question 3

Data set: 3, 5, 5, 7, 9, 9, 9. What is the mode?

Accepted Answer

9

Answer

The mode is 9 because it appears three times, more than any other value.

Question 4

A histogram shows most data clustered on the right side with a long tail extending to the left. This distribution is called:

Accepted Answer

Left-skewed

Answer

When the tail points to the left (lower values), the distribution is left-skewed (negatively skewed).

Question 5

If the probability of rain tomorrow is 0.35, what is the probability it will NOT rain?

Accepted Answer

0.65

Answer

Complementary probability: 1 − 0.35 = 0.65.

California High School Proficiency Exam Practice Test