Chapter 1 Midterm Exam Review

The computer lab teacher is asking students in school what is their favorite computer application. Identify the population.

• all students in the computer lab

• all students in the school

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Data Analysis

Which of the following best describes a random sample?

• Each member of the population has an equal chance of being chosen.

• Each member of the sample has an equal chance of being chosen.

• Randomly select the 21st person in the population.

• Randomly select a person, then choose the next 25.

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Data Analysis

A clothing store wants to find out which color will be popular this spring. The salespeople ask all the women who buy dresses. Is this sampling method random?

• yes

• no

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Data Analysis

Use the following data to match the mean, median, mode, and range:

15, 21, 15, 25, 20, 30

• mean

• 15

• mode

• 21

• median

• 20.5

• range

• 15

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Data Analysis

Use the following data to match the mean, median, mode, and range:

5, 8, 16, 14, 2, 18, 8

• 8

• 8

• 16

• range

• mean

• 10.1

• median

• mode

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Data Analysis

Identify the outlier in the following list:

10, 4, 20, 5, 11, 150, 7

Mathematical Equivalence

ON

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Data Analysis

Using the following data 15, 21, 15, 25, 20, 30, an outlier of 63 would ​ (a)   the mean.

• increase
• decrease

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Data Analysis

Complete a cumulative frequency table of the data:

15, 21, 15, 25, 20, 30

e

d

c

b

a

5

6

2

1

3

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Data Analysis

Make a stem-and-leaf plot of the data:

15, 21, 15, 25, 20, 30

e

d

c

b

a

0

1

2

3

5

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Data Analysis

What is the range of the stem-and-leaf plot?

Mathematical Equivalence

ON

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Data Analysis