z- Score

z- Score If a normal distribution has mean µ and standard deviation , then the z-score for the number x is z = .   Example:- If a normal distribution…

Range

Range The difference between the largest and smallest number in a sample is called the range.   Example:- Find the range for each list numbers. 12, 27, 6, 19, 38,…

Mode

Mode The number occurs more often then any other, it is called mode.   Example:- 57, 38, 55, 80, 55, 87, 98   Solution:- The number 55 occurs more often…

Median

Median Odd Number of Entries 8, 7, 4, 3, 1 The median is a middle term “4”.   Even Number of Entries 2, 3, 4, 7, 9, 12 The median…