The mean of 15 observations is 14. If the mean of first 7 observations is 12 and that of last 7 observations is 16. Find the middle term.
Answers
Answered by
17
15x14 =216
12x7=84
16x7=102
add 84 and 102 =186
216-184=32 is the answer.
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12x7=84
16x7=102
add 84 and 102 =186
216-184=32 is the answer.
hope it will help u simply. if u like plz mark it as brainliest
Answered by
11
X/7=12
X=84
Y/7=16
Y=112
(X+Y+Z)/15=14
X+Y+Z=210
Z=210-X-Y
Z=210-84-112
Z=14
X=84
Y/7=16
Y=112
(X+Y+Z)/15=14
X+Y+Z=210
Z=210-X-Y
Z=210-84-112
Z=14
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