Statistics Quiz 5

Question 1

The ratio of the sum of observations and the total number of observations is called:

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Central tendency

Question 2

The mean of x+2, x+3, x+4 and x-2 is:

Accepted Answer

(4x+7)/4

Answer

(x+7)/4

Answer

(2x+7)/4

Answer

(3x+7)/4

Question 3

In an ungrouped data there are 10 scores. After arranging them which term is the median?

Accepted Answer

Average of $\frac{n^{th}}{2}$ term and $(\frac{n}{2}+1)^{th}$ term

Answer

$\frac{n^{th}}{2}$ term

Answer

$(\frac{n}{2}+1)^{th} $ term

Answer

$(\frac{n+1}{2})^{th}$ terrm

Question 4

The median of the data: 4, 6, 8, 9, 11 is

Accepted Answer

8

Answer

6

Answer

9

Answer

11

Question 5

In class 10&ndash;15, 10 is called as

Accepted Answer

Lower boundary of 10 &ndash; 15 class

Answer

Upper boundary of 10 &ndash; 15 class

Answer

Lower limit of 10 &ndash; 15 class

Answer

Upper limit of 10 &ndash; 15 class

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