A sample has data values 27, 25, 20, 15, 30, 34, 28, 25. Calculate the range, interquartile range, variance, standard deviation and coefficient of variation.
Discuss the advantages and disadvantages for the interquartile
range and standard deviation in describing the variability present
in a distribution of scores.
Calculate the range, the interquartile, the variance, and the
standard deviation. What do these measures tell you about the
"spread" of the data? 110.00 117.00 120.00 118.00 104.00 100.00
107.00 115.00 115.00 115.00 114.00 100.00 117.00 115.00 103.00
105.00 110.00 115.00 250.00 275.00
Write short notes on Harmonic Mean, Arithmetic Mean, Geometric
Mean, Median, Mode, Range, Standard Deviation, Interquartile
Deviation, Skewness, Kurtosis and using practical examples, explain
how these measures are useful in the field of Business
Administration. (10marks)
1. What is the key difference between a population standard
deviation and the standard deviation of a sampling
distribution?
2. How does this effect the normal distribution for the sample?
(i.e. shape)