What is median, mode and mean?
Answers
Step-by-step explanation:
The mean of a data set is found by adding all numbers in the data set and then dividing by the number values in the set.
The median is the middle value when a data is ordered from least to greatest .
The mode is the number that occurs most often in a data set
Median : It is the middle number of any data set when the set is arranged in the ascending or descending order .
Formula for median : (n+1)/2.
Mode : It is the number which occurs most of the times in the data set.
Mean : It is the average of the numbers present in the data set.
Formula for mean : Sum of all observations/No. of observations.
For example: The data set is :
1, 2, 3 , 3, 4, 6, 9.
Here, the median = (7+1)/2th term. = 8/2th term.
= 4th term.
So, the median is 3 ( As the numbers are already arranged in the ascending order ).
Mode : Here, 3 appears for the most times.So, 3 is the mode of this data set.
Mean : (1+2+3+3+4+6+8)/7.
= 28/7.
= 4.
Hence, the mean of this data set is 4.
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