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
\(\frac{20}{100}\) × 50
2 × 5 = 10
So, 20% of 50 is 10
Question 2.
8.5% of 300 ____________
Answer:
8.5% = 8.5/100
\(\frac{8.5}{100}\) × 300= 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.
