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

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

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

Write each fraction as a decimal and a percent.

Question 1.
$$\frac{1}{2}$$
0.5

$$\frac{3}{4}$$
0.75

Question 3.
$$\frac{2}{5}$$
0.4

Question 4.
$$\frac{7}{10}$$
0.7

Find the range of the data.

Question 5.
52, 48, 57, 47, 49, 60, 59, 51 ____
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 ______
9

Order the data from the least to the greatest.
4, 5, 5, 6, 6, 8, 9, 12, 12, 13
The range is the difference between the greatest and the least data values.
The range = 13 – 4 = 9

97, 106, 99, 97, 115, 95, 108, 100 ___
20

Order the data from the least to the 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 ___
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 ______
5.6

mean = $$\frac{3+5+7+3+6+4+8+6+9+5}{10}$$
= $$\frac{56}{10}$$
= 5.6

8.1, 9.4, 11.3, 6.7, 6.2, 7.5
8.2

mean = $$\frac{8.1+9.4+11.3+6.7+6.2+7.5}{6}$$
= $$\frac{49.2}{6}$$
= 8.2

Visualize Vocabulary

Use the âœ“ 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 ______