Example: Find the arithmetic mean of 4, 8, 12, 16, 20. Solution: Given, 4, 8, 12, 16, 20 is the set of values. Sum of values = 4+ 8+12+16+20 = 60. Number of values = 5. Mean = 60/5 = 12. Arithmetic Mean of Ungroued Data. If x 1, x 2, x 3 ,……,x n be the observations with the frequencies f 1, f 2, f 3 ,……,f n, then the arithmetic mean is given by:

Jun 26, 2021 · For ungrouped data, the arithmetic mean is relatively easy to find. Let’s learn to find the arithmetic mean for grouped and ungrouped data. Example - Ungrouped data Find the arithmetic mean for a class of eight students, scored the following marks for a maths test out of 20. Solution Step 1: Add all the values.

Examples: 1. In a maths test, the marks obtained out of 70 by 7 students are as follows: 22, 27, 42, 35, 14, 54, 57. Find the... 2. The arithmetic mean of the 5 observations is 50. Four among the five observations are given, i.e., 20, 35, 55, 40. 3. Find the …