Math - Data Analysis

For yealry exams

Mean formula

The mean formula is defined as the sum of all data values divided by the number of values. It provides a measure of central tendency for a data set.

Formula for Median

The formula for median is determined by arranging the data points in ascending order and selecting the middle value. If there is an even number of values, the median is the average of the two middle values.

Calculating the range

Range = Highest score - Lowest score

Mode

The most frequent or most occuring score in a data set.

Formula for finding class center

The formula for finding the class center is the midpoint of the upper and lower class boundaries (high number of range and low (e.g. Class: 10 - 15, class center = (10 + 15)/2)) of a data interval, calculated as the average of these two values.