For the marks of 80 students

MATHEMATICS · Subjective · CBSE · Mathematics · Statistics · Statistics

Problem

For the marks of 80 students, the grouped distribution below has one missing frequency. Class (marks): 0–10 10–20 20–30 30–40 40–50 Frequency: 10 15 25 f 5 If the mean mark is 25, find the value of f.

Related theory

Browse the problem library