Question 1

When the values of two variables change in the same direction, there is _________correlation

Accepted Answer

A) + ve 
B) - ve 
C) Perfect 
D) None of these

Question 2

If all the values of a series are multiplied by 5 what happens to the S.D

Accepted Answer

A) Decreasing by 5 
B) Increasing by 5 
C) Multiplied by 5 
D) None of these

Question 3

The mode of a frequency distribution can be determined graphically by

Accepted Answer

A) Median 
B) Ogive 
C) Histogram 
D) None of these

Question 4

Find the value of third quartile if the values of first quartile and quartile deceiation are 104 & 108 respectively

Accepted Answer

A) 120 
B) 70 
C) 110 
D) 140

Question 5

A lock-out in a factory for a month is associated with the component of a time series is :

Accepted Answer

A) irregular movement 
B) secular trend 
C) cyclic variation 
D) none of these

Exam 1: Statistical Analysis and Time Series Forecasting

When the values of two variables change in the same direction, there is _________correlation