11th Class Statistics MCQS Chapter 3

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11th Class Statistics MCQS


For a certain distribution if ?(x -10) = 5, ?(x -20) =18 & ?(x -15) = 0 then the value of ? is.
15
25
10

If x? = 10 and Y = 5 +2x, then Y? is.
5
10
25
15

The median divides the data into———— equal parts
One
Two
Four
Three

Which one of the following is not effected by extreme values
median
mean
mode
both (a) and (b)

The mean of a constant a is
a/2
None of these
a2
0

The most frequent value of the data is called
Mode
Mean
H.M
Median

The sum of the deviation form mean of a set of an value is
positive
None of these
least
0

50th percentile is also called as
Mode
Average
Mean
Median

The mode of letters in the word STATISTICS is:
I
S
T
S & T

The 5th decile is always equal to
1st quartile
Both (a) and (b)
2nd quartile
3rd quartile

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