Question

the central value of the set of observation is called
median
mean
mode​

Answer 1

Answer :- Median.

Explanation :-

→ Median :- When data is arranged in ascending or descending order , the value which lies in the middle of the data is known as median .

• The median of a set of data is the middlemost number in the set.
• The median is also the number that is halfway into the set.

Formula :-

Arrange the data in ascending or descending order , then :-

→ When Total terms are odd , Median = (n+1)/2 th terms

→ When Total terms are even , add the two middle terms and divide by 2 = {(n/2 th term)+(n/2+1) th term}/2 .

for grouped data :-

• Median = l + [{(n/2) - cf} / f] * h
• l = lower limit of median class .
• n = total frequency .
• cf = Cumulative frequency of class before median class .
• f = frequency of median class .
• h = size of class .

therefore, the central value of the set of observation is called median .

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