the mean weight of 9 students is 45 kg find their total weight and find the new mean weight if a student who weighs 50 kg joins them
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Answered by
1
new weight - 45+50÷10 # 54 kg
mercy2:
it was helpful
assu what is your answer here
Correct mean is 45.5 kg
Answered by
1
Mean weight of 9 students = 45 kg
Total weight of those 9 students = 45×9 kg = 405 kg
One new students joins them having weight 50 kg .
Then weight of all those 10 students = 405+50 kg = 455 kg
Mean = Total observation/No. of observation
Mean = 455 kg/10
Mean = 45.5 kg
Total weight of those 9 students = 45×9 kg = 405 kg
One new students joins them having weight 50 kg .
Then weight of all those 10 students = 405+50 kg = 455 kg
Mean = Total observation/No. of observation
Mean = 455 kg/10
Mean = 45.5 kg
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