Math, asked by aylanimseymour, 13 hours ago

the mean height of 15 students in a class is 100 cm.
if two leave what is the new mean.

Answers

Answered by deepi62
0

Answer:

Total height of 15 students =∑x=154×15=2310cm

Total height of 15 students =∑x=154×15=2310cmIt was found that 175cm was wrongly read as 145

Total height of 15 students =∑x=154×15=2310cmIt was found that 175cm was wrongly read as 145Correct sum =2310−145+175=2340cm

Total height of 15 students =∑x=154×15=2310cmIt was found that 175cm was wrongly read as 145Correct sum =2310−145+175=2340cmCorrect mean =

Total height of 15 students =∑x=154×15=2310cmIt was found that 175cm was wrongly read as 145Correct sum =2310−145+175=2340cmCorrect mean = 15 divede

2340

2340

2340 =156cm

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