Question

In a continuous frequency distribution, the mean of
the data is 25. If each item is increased by 5, then
the new median will be
(a) 25 (6) 30 (c) 20 (d) none of these​

Answer 1

(b) 30

Step-by-step explanation:

Given: A continuous frequency distribution with mean of the data is 25.

If each item is increased by 5, then find the new median.

Old Mean = 25 = Sum / n

New mean = Sum + 5n / n = Sum/n + 5n/n = Sum/n + 5 = Old mean + 5  

= 25 + 5

= 30

Option B is the answer.

Answer 2

Answer:

option (c)20

Step-by-step explanation:

mean= sum pf observation/number of observation

given: mean=25

addition=5

25=$\frac{sum}{n}$

25=$\frac{5n+sum}{n}$

25=$\frac{5n}{n} +\frac{sum}{n}$

25=5+$\frac{sum}{n}$

25-5=sum/n

∴new mean =20