Find the missing frequency for the following distribution

MATHEMATICS · Single correct · CBSE · Mathematics · Statistics · Statistics

Problem

Find the missing frequency

k

for the following distribution, given that the mean of the data is

30

. Class interval: 10–20 20–30 30–40 40–50 Frequency: 4 k 12 8 (a) 22 (b) 24 (c) 32 (d) 20