Question 1180228: Q−1: [4+6+8+2 Marks] consider the salaries ($) of 10 employees working for a small company.
$2100, $2200, $2300, $2400, $2600, $2700, $2700, $2800, $2900, $3000.
a) Calculate the mean, median of the salaries.
b) Find the inter-quartile range of the salaries.
c) Calculate the standard deviation of the salaries.
d) Find the range.
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! The median is mid-way between the already ordered numbers or half way between the 5th and 6th or $2650.
the mean is $2570
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The 25th percentile is the lower half of the data below the mean, which are the 5 elements below $2650, and their middle is $2300. Similarly ,the 75th percentile is $2800.
The IQR is the difference or $500.
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The SD for this is $3057, considering it as a sample. As a population, it would be $290.
The range is top-bottom or $900.
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