Math, asked by dinesha1480, 5 months ago

14 is the mean of 7 observations 20 is the mean of observation the mean of a combined set is given by

Answers

Answered by RoshniRai31

0

17.3

Step-by-step explanation:

combined mean

=(14×7+20×8)÷(7+8)

=258÷15

=17.2

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