Q. 225.0( 2 Votes )
Candidates of four schools appear in a mathematics test. The data were as follows:
If the average score of the candidates of all the four school is 66, find the number of candidates that appeared from school III.
To Find: Number of candidates that appeared from school III
Given: Average score of the candidates of all four school is 66
Let no. of students appeared from school III = x
Given, Average score of all schools = 66
10340 + 55x = 66x + 9768
10340 – 9768 = 66x – 55x
11x = 572
Therefore, no. of candidates appeared from school (III) is 52.
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Find the missing frequencies in the following frequency distribution if it is known that the mean of the distribution is 50.
Find the median of the following data
92, 35, 67, 85, 72, 81, 56, 51, 42, 69RD Sharma - Mathematics