The following data give the prices of seven textbooks randomly selected from a university bookstore. $87 $174 $102 $129 $58 $162 $149 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 = $Enter you answer; Mean Deviation from the mean for $174 = $Enter you answer; Deviation from the mean Sum of these deviations = $Enter you answer; Sum of these deviations b. Calculate the range, variance, and standard deviation. [Round your answers to 2 decimal places.] Range = $Enter you answer; Range Variance = Enter you answer; Variance Standard deviation = $Enter you answer; 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.
The following data give the prices of seven textbooks randomly selected from a university bookstore.
|
$87 |
$174 |
$102 |
$129 |
$58 |
$162 |
$149 |
a. Find the
Mean = $Enter you answer; Mean
Deviation from the mean for $174 = $Enter you answer; Deviation from the mean
Sum of these deviations = $Enter you answer; Sum of these deviations
b. Calculate the
Range = $Enter you answer; Range
Variance = Enter you answer; Variance
Standard deviation = $Enter you answer; Standard deviation
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
