Pls answer this maths question
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Answer:
Step-by-step explanation:
class fi xi ui(xi-a/h) fiui
0-10 7 10+0/2=5 5-25/10=-2 -14
10-20 12 10+20/2=15 15-25/10=-1 -12
20-30 13 20+30/2=25=a 25-25/10=0 0
30-40 10 30+40/2=35 35-25/10=1 10
40-50 8 40+50/2=45 45-25/10=2 16
sigma fi=50 sigma fiui=-26+26=0
mean= a+sigma fiui/sigma fi * h
=25+0/50*10
=25+0
=25
therefore the mean is 25
hope this helped ;)
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