Question

Find the mean of the following distribution if Xi’s are 10,13,16,19 and their frequencies 2,5,7 and 6.​

Answer 1

Answer:

the answer is 15.5

Step-by-step explanation

∑fi=20

∑fixi=311

Mean=∑fixi/∑fi

=$\frac{311}{20}$

=15.55

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