Consider the following frequency distribution for a sample of 20 observations Class 0<5 5 < 10 10 < 15 Frequency 5 The sample variance of the above data is O a. 18.5 O b. 17.5 O c. 17.37 O d. 17.73
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.
![Consider the following frequency distribution for a sample of 20 observations
Class
0<5
5 < 10
10 < 15
Frequency 5
6.
9.
The sample variance of the above data is
O a.
18.5
O b. 17.5
O c. 17.37
O d. 17.73
80
F3
E4](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F90e6deb5-8eaa-4de9-a939-f32d92937a12%2Fb6488b86-a935-468f-a3c0-fa56a01c05fc%2For79ax_processed.jpeg&w=3840&q=75)
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