METHODS OF DATA ANALYSIS
MEASURES OF CENTRAL TENDENCY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
By how much will the mean vary if the outlier is included?79, 69, 81, 73, 38, 86, 68
|
|
70.6
|
|
|
5.9
|
|
|
76
|
|
|
5.4
|
Explanation:
Detailed explanation-1: -Outliers are numbers in a data set that are vastly larger or smaller than the other values in the set. Mean, median and mode are measures of central tendency. Mean is the only measure of central tendency that is always affected by an outlier. Mean, the average, is the most popular measure of central tendency.
Detailed explanation-2: -The mean is more sensitive to the existence of outliers than the median or mode.
Detailed explanation-3: -When a outlier is present it can effect the shape of the graph, if we have outliers to the right of the graph. These outliers are causing the mean to increase, but if we have outliers to the left of the graph these outliers are dragging down the mean.
There is 1 question to complete.