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Data Classification and Presentation
65
Introduction To Probability
64
Measures Of Dispersion
97
Measures of Central Tendency
71
Business Statistics Basics
85
Probability Distributions
83
Sampling Distributions
53
Moments, Skewness and Kurtosis
58
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Sampling Distributions
The distribution of difference of proportions approximate the normal standard distribution only if
n > or = 30
n < or = 30
n > or = 50
n < or = 50
Author:
rikazzz
Comment
Business Statistics Basics
The data measurement which arises from a specific process of counting is classified as
continuous data
discrete data
reliable data
valid data
Author:
rikazzz
Comment
Probability Distributions
The process in which the trials are statistically independent and each trial of event has only two outcomes is classified as
Bernoulli process
Bayes process
functional process
independent limited process
Author:
rikazzz
Comment
Measures of Central Tendency
The value of Σfd is 165, A= 25, and width of class interval is 10, arithmetic mean is 145 then the number of observations are
35
36
34
32
Author:
rikazzz
Comment
Measures Of Dispersion
The sum of observations is 12 and coefficient of absolute mean deviation is 18 then value of mean absolute deviation is
516
716
216
616
Author:
rikazzz
Comment
Measures of Central Tendency
In the two units of company, the employees in unit one are 650 and monthly salary is $2750, the employees in unit two are 700 and monthly salary is $2500 then the combined arithmetic mean is
$2,620
$2,520
$2,420
$2,320
Author:
rikazzz
Comment
Sampling Distributions
The quota sampling, judgment sampling and convenience sampling are classified as types of
random sampling
non random sampling
direct sampling
indirect sampling
Author:
rikazzz
Comment
Probability Distributions
If the random samples are drawn without replacement and the population from which samples are drawn is infinite then the method which is not applicable is
weighted error probability distribution
hyper geometric probability distribution
Bernoulli probability distribution
asymmetrical random distribution
Author:
rikazzz
Comment
Data Classification and Presentation
The type of bar chart that is used to present deficit in loss, excess in exports and deficit in imports is classified as
ungrouped bar charts
grouped bar charts
deviation bar charts
dimension bar charts
Author:
rikazzz
Comment
Moments, Skewness and Kurtosis
For the ungrouped data in calculation of moments from mean, the formula to calculate this measure is
1⁄n Σ(x-mean)r
2⁄n Σ(x-mean)r
2⁄n Σ(x+mean)r
2⁄n Σ(x+mean)x
Author:
rikazzz
Comment
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