The following data give the prices of seven textbooks randomly selected from a university bookstore. $88 $171 $103 $128 $58 $165 $141 a. Find the mean for these data. Calculate the deviations of the data values from the mean. Is the sum of these deviations zero? Mean = $ Deviation from the mean for $171 = $ Sum of these deviations = $ b. Calculate the range, variance, and standard deviation. [Round your answers to 2 decimal places.] Range = $ Variance = Standard deviation = $
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
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Mann, Introductory Statistics, 9e
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Assignment
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ORION
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Chapter 03, Section 3.2, Problem 033
The following data give the prices of seven textbooks randomly selected from a university bookstore.
$88 $171 $103 $128 $58 $165 $141
a. Find the mean for these data. Calculate the deviations of the data values from the mean. Is the sum of these deviations zero?
Mean = $
Deviation from the mean for $171 = $
Sum of these deviations = $
b. Calculate the range, variance, and standard deviation. [Round your answers to 2 decimal places.]
Range = $
Variance =
Standard deviation = $](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd4486324-0398-4ffc-b6e1-3860c30708a6%2Fce283c04-730a-41e7-bbe7-e6cc6af11af9%2F5ot1f7t_processed.jpeg&w=3840&q=75)
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