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The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation
27.8%
48.3%
60.4%
35.7%
In a week the prices of a bag of rice were 350,280,340,290,320, 310,300.
The range is
100
80
60
70
A numerical value used as a summary measure for a sample, such as sample mean, is known as a
population parameter
sample statistic
sample parameter
population mean
In statistics, a population consists of
All People living in the are under study
All subjects or objects whose characteristics are being studied
None of the above
All People living in a country
Formula written as quartile deviation divided by sum of third and first quartile is used to calculate
coefficient of quartiles
coefficient of central tendency
coefficient of inter quartiles
co-efficient of quartile deviation
A researcher selects a probability sample of 100 out of the totalpopulation.
It is
A cluster sample
A random sample
A systematic sample
A stratified sample
The middle value of an ordered array of numbers is the
Mode
Mean
median
MidPoint
1st quartile is also known as
lower quartile
geometric mean
median
upper quartile
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