Refer to our Texas Go Math Grade 7 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 7 Module 12 Answer Key Random Samples and Populations.

**Texas Go Math Grade 7 Module 12 Answer Key Random Samples and Populations**

**Texas Go Math Grade 7 Module 12 Are You Ready? Answer Key**

Complete these exercises to review skills you will need for this module.

**Write each fraction as a decimal and a percent.**

Question 1.

\(\frac{1}{2}\)

Answer:

0.5

Question 2.

\(\frac{3}{4}\)

Answer:

0.75

Question 3.

\(\frac{2}{5}\)

Answer:

0.4

Question 4.

\(\frac{7}{10}\)

Answer:

0.7

**Find the range of the data.**

Question 5.

52, 48, 57, 47, 49, 60, 59, 51 ____

Answer:

13

Order the data from the least to greatest.

47, 48, 49, 51, 52, 57, 59, 60

The range if the difference between the greatest and the least data values.

The range = 60 – 47 = 13

Question 6.

5, 9, 13, 6, 4, 5, 8, 12, 12, 6 ______

Answer:

9

Order the data from the least to greatest.

4, 5, 5, 6, 6, 8, 9, 12, 12, 13

The range if the difference between the greatest and the least data values.

The range = 13 – 4 = 9

Question 7.

97, 106, 99, 97, 115, 95, 108, 100 ___

Answer:

20

Order the data from the least to greatest.

95, 97, 97, 99, 100, 106, 108, 115

The range if the difference between the greatest and the least data values.

The range = 115 – 95 = 20

Question 8.

27, 13, 35, 19, 71, 12, 66, 47, 39 ___

Answer:

59

Order the data from the least to greatest.

12, 13, 19, 27, 35, 29, 47, 66, 71

The range if the difference between the greatest and the least data values.

The range = 71 – 12 = 59

**Find the mean of each set of data.**

Question 9.

3, 5, 7, 3, 6, 4, 8, 6, 9, 5 ______

Answer:

5.6

mean = \(\frac{3+5+7+3+6+4+8+6+9+5}{10}\)

= \(\frac{56}{10}\)

= 5.6

Question 10.

8.1, 9.4, 11.3, 6.7, 6.2, 7.5

Answer:

8.2

mean = \(\frac{8.1+9.4+11.3+6.7+6.2+7.5}{6}\)

= \(\frac{49.2}{6}\)

= 8.2

**Texas Go Math Grade 7 Module 12 Reading Start-Up Answer Key**

**Visualize Vocabulary**

**Use the ✓ words to complete the right column of the chart.**

**Understand Vocabulary**

**Complete each sentence, using the preview words.**

Question 1.

An entire group of objects, individuals, or events is a ______

Answer:

A population

Question 2.

A _____ is part of the population chosen to represent the entire group.

Answer:

A sample

Question 3.

A sample that does not accurately represent the population is a ___.

Answer:

A biased sample