Question

( 1 ) Calculate the mean and median for the following data.
Mark
10
12 13 14 16 19 20
No. of Students 3 5 4 5 2 3 2 1
Using empirical formula, find it mode.​

Answer 1

Calculation of mean Mean = Σ fi xi/ Σ fi = 332/25 = 13.28 Here, n = 25, which is an odd number. Therefore, Therefore median = ((n+1)/2)th term Median = value of 13th term Median = 13 Now, by using empirical formula we have, Mode = 3 Median – 2 Mean Mode = 3 (13) – 2 (13.28) Mode = 39 – 26.56 Mode = 12.44

Step-by-step explanation:

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