Deck 6: Statistics and Statistical Analysis

Question 1

The control charts used for the fraction of defective items in a sample is............................

A)Range chart
B)P-chart
C)C-chart
D)Mean chart

Answer 1

P-chart

Question 2

........................is user for testing goodness of fit.

A)Wilcoxon test
B)Sign test
C)K-S Test
D)Chi-square test

Answer 2

Chi-square test

Question 3

Regression coefficient is independent of...........................

A)Origin
B)Scale
C)Both a and b
D)Neither origin nor scale

Answer 3

Origin

Question 4

The geometric mean of the two regression coefficient, bxy and byx is equal to:

A)R
B)r²
C)1
D)None of the above

Question 5

In a correlation analysis, if r= 0, then we may say that there is .................. between variables.

A)No correlation
B)Linear correlation
C)Perfect correlation
D)none of these

Question 6

If 'r' is the correlation coefficient between two variables, then:

A)0 < r < 1
B)- 1 ? r ? 1
C)r ? 0
D)r ? 0

Question 7

Statistics can be best considered as

A)an art
B)science
C)both art as well as science
D)art and philosophy

Question 8

The mid point of a class is obtained by

A)adding upper and lower limit
B)deducting upper limit from the lower limit
C)dividing the diference of upper and lower limit by 2
D)ading upper and lower limit and dividing by 2

Question 9

The algebraic sum of the deviations of a set of a n values from their arithmetic mean is

A)n
B)0
C)1
D)-1

Question 10

Standard deviation is

A)absolute measure
B)relative measure
C)both
D)none

Question 11

Coefficient of variation is a relative measure of

A)mean
B)standard deviation
C)range
D)dispersion

Question 12

In a business house, statistics decreases the:

A)risk
B)uncertainty
C)profit
D)sales

Question 13

Cartograph is a:

A)line diagram
B)bar diagram
C)map
D)circle

Question 14

Statistical results are all the time:

A)qualitative one
B)an average
C)an exact result
D)an isolated number

Question 15

Economics cannot be a successful subject without:

A)business
B)commerce
C)statistics
D)management

Question 16

The arithmetic mean between 5 + 3 and 5 - 3 is:

A)3
B)3.
C)5.
D)5

Question 17

The geometric mean of two numbers is 16. If one number is 32, the other number is:

A)4
B)6
C)8
D)10

Question 18

The harmonic mean of 4 and 6 is:

A)4.5
B)4.8
C)5
D)5.5

Question 19

Difference between highest and lowest value called:

A)standard deviation
B)Mean Deviation
C)Quartile Deviation
D)Range

Question 20

Open-end classes are those in which

A)lower limit of the first class and the upper limit of the last class are known
B)lower limit of the first class and the upper limit of the last class are not known
C)only lower limit of the first class are known
D)none of the above

Question 21

Relationship of mean, median and mode according to Karl Pearson is

A)mode = 2median - 3mean
B)median = 2mode - 2mean
C)mode = 3median - 2 mean
D)none of the above