# Statistics Quiz 1 MCQ quiz for economics

1.
A graph uses vertical bars to represent data is called a .......

2.
The goal of .......... is to focus on summarizing and explaining a specific set of data.

3.
In grouped frequency distribution, the intervals should be

4.
The nature of statistical inference is

5.
The shape of frequency curve can not be

6.
The most frequency occurring number in a set of values is called

7.
Which of the following is correct?

8.
What is the mode of 5, 7, 9, 12, 10, 15, 7, 8, 7, 25?

9.
Arithmetic mean of earning of 42 workers in a factory is Rs. 1200 per month. On account of price rise the workers managed to get 10% hike in their earning. In addition to this the management paid Rs. 100 per month to each employee as bonus. The arithmetic mean of total earning of the workers after these changes will be

10.
Lack of symmetry is

11.
First measure of skewness is

12.
The mean and standard deviation of a sample size 10 were found to be 9.5 and 2.5 respectively. Later on, an additional observation become available. This was 15.0 and was included in the original sample. The mean and standard deviation of 11 observations will be

13.
(Q3-Q1)/(Q3+Q1) is the formula for (here Q is quartile)

14.
E(XY) =?

15.
Mean of a binomial distribution is