Take a random data using generatdata.com the link is https://www.generatedata.com/. In the field "Your Data Set Name" type your name then in "Data Set" "Column Title" type Weights in Grams "Data Type" select Number Range then in "Option" chose between 1 and 30 lastly in “Export Type" select excel. This will generate random data, you only select the first fifty observations, and all of you will have different data. Students should take the print out of the data and submit that in hard form with the hand written answer sheet. QI. (a) Construct group frequency distribution. (b) Now calculate Mean, Median and Mode for group data. (c) Also calculate Coefficient of Variation.
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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