Find the mean of each of the following frequency distributions :

Class interval: 25−35 35−45 45−55 55−65 65−75

Frequency: 6 10 8 12 4

Open in App

Solution

Let the assumed mean be A = 50 and h = 10.

We know that mean,

Now, we have.

Putting the values in the above formula, we have

Hence, the mean is 49.5.

Suggest Corrections

Similar questions

Q. Calculate the median from the following data:

Rent (in Rs.):	15−25	25−35	35−45	45−55	55−65	65−75	75−85	85−95
No. of Houses:	8	10	15	25	40	20	15	7

Q. Find the mean, using direct method:

Class	25-35	35-45	45-55	55-65	65-75
Frequency	6	10	8	12	4

Calculate the mean of the following data, using direct method:
$\begin{matrix} Class & 25 - 35 & 35 - 45 & 45 - 55 & 55 - 65 & 65 - 75 Frequency & 6 & 10 & 8 & 12 & 4 \end{matrix}$

Find the mean of the following using step deviation method.

Find the mean of the following data, using step-deviation method:
$\begin{matrix} Class & 5 - 15 & 15 - 25 & 25 - 35 & 35 - 45 & 45 - 55 & 55 - 65 & 65 - 75 Frequency & 6 & 10 & 16 & 15 & 24 & 8 & 7 \end{matrix}$

Join BYJU'S Learning Program

Class interval:	25−35	35−45	45−55	55−65	65−75
Frequency:	6	10	8	12	4

Find the mean of each of the following frequency distributions : Class interval: 25−35 35−45 45−55 55−65 65−75 Frequency: 6 10 8 12 4

Let the assumed mean be A = 50 and h = 10. We know that mean, Now, we have. Putting the values in the above formula, we have Hence, the mean is 49.5.

Find the mean of each of the following frequency distributions :

Class interval: 25−35 35−45 45−55 55−65 65−75

Frequency: 6 10 8 12 4

Let the assumed mean be A = 50 and h = 10.

We know that mean,

Now, we have.

Putting the values in the above formula, we have

Hence, the mean is 49.5.