1. Find the range, the variance, and the standard deviation for the sample of ten IQ scores randomly selected from a school for academically gifted students. 132 139 162 147 133 160 145 150 148 153 2. Consider the data set represented by the table z 26 27 28 29 30 31 32 f3 4 16 12 6 2 1 a. Use the frequency table to find that Ea 1256 and Er² = 35,926. b. Use the information in part (a) to compute the sample mean and the sample standard deviation.

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1. Find the range, the variance, and the standard deviation for the sample of ten IQ scores
randomly selected from a school for academically gifted students.
132
139 162 147
133 160 145 150
148 153
2.
Consider the data set represented by the table
z 26 27 28 29 30 31 32
f3 4 16 12 6 2 1
a. Use the frequency table to find that Ea = 1256 and Er = 35,926.
b. Use the information in part (a) to compute the sample mean and the sample standard deviation.
Transcribed Image Text:1. Find the range, the variance, and the standard deviation for the sample of ten IQ scores randomly selected from a school for academically gifted students. 132 139 162 147 133 160 145 150 148 153 2. Consider the data set represented by the table z 26 27 28 29 30 31 32 f3 4 16 12 6 2 1 a. Use the frequency table to find that Ea = 1256 and Er = 35,926. b. Use the information in part (a) to compute the sample mean and the sample standard deviation.
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