the mean of set of a data is 5.what will be the mean if ten is subtracted from each data
Answers
Answer:
-5
Step-by-step explanation:
Mean is nothing but average.
If 'a' is subtracted from all the data having mean or average = N,
then the resultant mean after subtracting 'a' from all the data is (N-a).
So, 5-10 = -5.
Given : mean of a set data is 5
To Find : what will the mean if ten is subtracted from each data?
a) -5
b) -15
c) 10
d) 5
Solution:
Let say number of data points = n
Mean of Data set = 5
Total of Data set = 5n
10 is subtracted from Each data
Hence 10n will be subtracted
New Total = 5n - 10n
= - 5n
Number of data = n
New Mean = -5n/n
= - 5
New Mean will be -5
option a is correct
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