Questions: Question 1 Which of the following is the average of all values in the entire population? population mean sample mean population proportion trimmed mean Question 2 Suppose a basketball team observed over ten games made the following number of freethrows in each game. What is the sample mean for these observations? Data: 2, 9, 15, 8, 7, 12, 11, 5, 18, 11. 10 9.5 9.8 11

Question 1 Which of the following is the average of all values in the entire population? population mean sample mean population proportion trimmed mean Question 2 Suppose a basketball team observed over ten games made the following number of freethrows in each game. What is the sample mean for these observations? Data: 2, 9, 15, 8, 7, 12, 11, 5, 18, 11. 10 9.5 9.8 11
Transcript text: Question 1 1 pts Which of the following is the average of all values in the entire population? population mean sample mean population proportion trimmed mean Question 2 1 pts Suppose a basketball team observed over ten gatnes made the following number of freethrows in each game. What is the sample mean for these observations? Data: 2, 9, 15, 8, 7, $12,11,5,18,11$. 10 9.5 9.8 11
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Solution

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Solution Steps

Solution Approach

For Question 1:

  • The average of all values in the entire population is known as the population mean.

For Question 2:

  • To find the sample mean, sum all the observations and divide by the number of observations.
Step 1: Identify the Average of All Values in the Entire Population

The average of all values in the entire population is known as the population mean.

Step 2: Calculate the Sample Mean

Given the data: \(2, 9, 15, 8, 7, 12, 11, 5, 18, 11\), we calculate the sample mean by summing all the observations and dividing by the number of observations.

\[ \text{Sample Mean} = \frac{2 + 9 + 15 + 8 + 7 + 12 + 11 + 5 + 18 + 11}{10} = \frac{98}{10} = 9.8 \]

Final Answer

\(\boxed{9.8}\)

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