
Concept explainers
i.
To calculate mean, median and mode of the given data set
i.

Answer to Problem 7PPS
Mean is 342.37, Median is329.97 and Mode is259.95.
Explanation of Solution
Given information:Prices of comparable computer tablets at 10 different locations is,
Tablet prices($) |
289.95,259.95,310,349.95,459.95,399.95,259.95,300,389,405 |
Formula used:Mean formula is,
Mean=
Where, n=total number of terms,
Median formula is,
Median=
Mode formula is,
Calculation:
Re-arrange the terms in ascending order,
259.95, 259.95, 289.95, 300, 310, 349.95, 389, 399.95, 405, 459.95
For mean,
Substituting values in mean formula,
So,
On solving,
Hence, mean is 342.37
For Median,
Number of observation,
n = 10
Substituting the values in median formula,
On solving,
Substituting the values of 5th and 6th term,
On solving,
For Mode,
Substituting the value in mode formula,
ii.
To evaluate the better measure of centre.
ii.

Answer to Problem 7PPS
Median is the better measure of center.
Explanation of Solution
Given information:
Mean, median and mode.
Median is a better measure of center in case someone wants to buy one tablet. As unlike mean it won’t be affected by the highly skewed data and unlike mode will not result in the highest price. Median will provide with a price, which will not be affected by the too high or too low values in the data set
Chapter 10 Solutions
Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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