Refer to our Texas Go Math Grade 8 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 8 Module 15 Answer Key Sampling.

## Texas Go Math Grade 8 Module 15 Answer Key Sampling

**Texas Go Math Grade 8 Module 15 Are You Ready? Answer Key**

**Find the percent.**

Question 1.

20% of 50 ___________

Answer:

20% = 20/100

\(\frac{2~~0~~}{1~~00~~}\) × 5~~0~~

2 × 5 = 10

So, 20% of 50 is 10

Question 2.

8.5% of 300 ____________

Answer:

8.5% = 8.5/100

\(\frac{8.5}{1~~00~~}\) × 3~~00~~= 8.5 × 3

= 25.5

Therefore 8.5% of 300 is 25.5

Question 3.

175% of 16.8 ____________

Answer:

175% = 175/100

\(\frac{175}{100}\) × 16.8

= 1.75 × 16.8

= 29.4

Therefore 175% of 16.8 is 29.4

**Solve for x.**

Question 4.

\(\frac{x}{12}\) = \(\frac{24}{36}\) ____________

Answer:

Given,

\(\frac{x}{12}\) = \(\frac{24}{36}\)

x = \(\frac{24}{36}\) × 12

x = 8

Question 5.

\(\frac{8}{x}\) = \(\frac{16}{7}\) ____________

Answer:

Given,

\(\frac{8}{x}\) = \(\frac{16}{7}\)

8 × \(\frac{7}{16}\) = x

x = 7/2

x = 3.5

Question 6.

\(\frac{5}{6}\) = \(\frac{x}{18}\) ____________

Answer:

Given,

\(\frac{5}{6}\) = \(\frac{x}{18}\)

x = \(\frac{5}{6}\) × 18

x = 5 × 3

x = 15

Question 7.

\(\frac{14}{15}\) = \(\frac{x}{75}\) ____________

Answer:

Given,

\(\frac{14}{15}\) = \(\frac{x}{75}\)

x = \(\frac{14}{15}\) × 75

x = 14 × 5

x = 70

**Find the mean of the data.**

Question 8.

55, 44, 53, 62, 51: ____________

Answer:

Given data 55, 44, 53, 62, 51

mean = sum of observations/number of observations

mean = (55 + 44 + 53 + 62 + 51)/5

mean = 265/5

mean = 53

Thus the mean of the data is 53.

Question 9.

3, 5, 3, 5, 2, 2, 5, 7: _____________

Answer:

Given data 3, 5, 3, 5, 2, 2, 5, 7

mean = sum of observations/number of observations

mean = (3 + 5 + 3 + 5 + 2 + 2 + 5 + 7)/8

mean = 32/8

mean = 4

Thus the mean of the data is 4.

**Texas Go Math Grade 8 Module 15 Reading Start-Up Answer Key**

**Visualize Vocabulary**

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

**Understand Vocabulary**

**Complete the sentences using the preview words.**

Question 1.

The entire group of objects, individuals, or events is the ____________.

Answer: The entire group of objects, individuals, or events is the **population**.

Question 2.

A sample in which every person, object, or event has an equal chance at being selected is a ___________.

Answer: A sample in which every person, object, or event has an equal chance at being selected is a **simple random sample**.

**Active Reading**

Layered Book Before beginning the module, create a layered book to help you learn the concepts in this module. Label each flap with lesson titles from this module. As you study each lesson, write important ideas, such as vocabulary and formulas, under the appropriate flap. Refer to your finished layered book as you work on exercises from this module.