STATISTICAL TECHNIQUES AND TOOLS
MEASURES OF CENTER AND SPREAD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Given the following statistics about scores on the last math test, what is the best description of the shape of the distribution?Mean:= 78Standard Deviation = 4Min = 64Median = 78Q1 = 72Q3 = 84Max = 99
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Skewed Right
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Skewed Left
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Roughly Symmetric
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Uniform
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Explanation:
Detailed explanation-1: -The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to greatest. The mode is the number that occurs most often in a data set. Created by Sal Khan.
Detailed explanation-2: -Along with measures of central tendency, measures of variability give you descriptive statistics for summarizing your data set. The range is calculated by subtracting the lowest value from the highest value. While a large range means high variability, a small range means low variability in a distribution.
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