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Subjects
Mathematics State Board
Class 9
Statistics
Measures of Central Tendency and Arithmetic Mean
4.
Calculate the mean if each value is decreased
Exercise condition:
2
m.
Answer variants:
70
72
69
68
The arithmetic mean of
6
observations is
78
. If each observation is
decreased
by
8
, then find the
arithmetic mean
for the new set of values.
The new
arithmetic value
is
.
1
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