mean median mode in statistcis
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Mean, median, & mode. 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.
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The formulae are as follows
Direct method : sigmafixi\sigmafi
Assumed mean method : a + sigma fidi/sigma fi
Step deviation method : a+ [sigma fiui/ sigma fi]×h
Median : l+[n/2-cf]÷f×h
Mode : l+[f1-f0/2f1-f0-f2]×h
Step-by-step explanation:
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