1- The Central value of data is called as:
(A) Average (B) Mean
Option (A) is correct.
2- In Average, Frequency 'f' always come in:
(A) Group Data (B) Ungroup Data
Option (A) is correct.
3- Summation a =:
(A) mb (B) na
Option (B) is correct.
4- Sum of deviation from mean =:
(A) 0 (B) 1
Option (A) is correct.
5- Sum of squared deviation from mean is always:
(A) maximum (B) minimum
Option (B) is correct.
6- Geometric Mean can never be calculated If any value in the data is:
(A) Negative or Zero (B) Five or Six
Option (A) is correct.
7- Harmonic Mean is used when:
(A) speed type of data is given (B) percentage increase or decrease types of data is given
Option (A) is correct.
Note: Geometric Mean is used when percentage increase or decrease types of data is given.
8- Reciprocal of Mean of Reciprocal values is called as:
(A) Geometric Mean (B) Harmonic Mean
Option (B) is correct.
9- A value which divides a data set into two equal parts is called as:
(A) Median (B) Mode
Option (A) is correct.
Note: Most repeated value in the data is called as Mode.
10- Given data;
X: 8,4,3,2,5
Median =?
(A) 3 (B) 4
Option (B) is correct.
11- If 'a' and 'b' are two numbers then Geometric Mean will be:
(A) Square root of 'ab' (B) Square of 'ab'
Option (A) is correct.
12- Emperical formula of Mean, Median & Mode is:
(A) Mode = 3 Median - 2 Mean
(B) Mode = 3 Mean - 2 Median
Option (A) is correct.
best of luck!
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