The mean of an examination is 69, the median is 68, the mod is 67, and the standard deviation is 3. The measures of variation of this examination is (a) 67 (b) 68 (c) 69 (d) 3

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Q: What is the z-score of x = 7, if it is 0.133 standard deviations to the left of the mean? (Enter an…

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Q: Suppose the main percentage in algebra is 70% and the standard deviation is 8% What percentage of…

A: Given,  mean value(μ) =70%  standard deviation(σ) = 8%Z=x-μσZ1=62-708=-1Z2=94-708 =3

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.