Question

question number 29
mean=. 25​

Answer 1

Answer:

f1 = 16

f2 = 15

Step-by-step explanation:

xifi = 1847 + 23f1 + 29f2

fi = 75 + f1 + f2

f1+f2=31-------------1

mean = ∑xifi/∑fi

25 = 1847+23fi+29f2/106

23f1+29f2 = 803------------2

solving 1 and 2,

f1 = 16

f2 = 15

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