Question

4. Find the missing frequency: mean = 50, Total frequency = 120
10 30 50 70 90
T 17 F 32 F₃ 19​

Answer 1

Answer:

let the missing frequencybe y

then,10+30+50+70+90+y/6=50

250+y/6=50

250+y=50×6=300

y=300-250

y=50