the following table gives the number of pages written by sarika for completing his own book for 30 days.number of pages written per day =16-18, 19-21, 22-24, 24-27, 28-30,;number of days =1, 3, 4 ,9 , 13.calculate average number of pages written in 30 days.

Open in App

Solution

Dear Student
The given data is not continuous .
Class Mid value,x_iNumber of Days,fi f_ix_i
15.5-18.5 17 1 17
18.5-21.5 20 3 60
21.5-24.5 23 4 92

24.5-27.5 26 9 234
27.5-30.5 29 13 377

sum of f_i= 30 sum of f_ix_i =780

Mean (x) = (f_ix_i/ f_i) = 780/30 =26

Therefore the mean of pages written =26

Regards

Suggest Corrections

Similar questions

Q. Question 4
The following table gives the number of pages written by Sarika for completing her own book for 30 days.

\begin{matrix} Number of pages written per day & 16 - 18 & 19 - 21 & 22 - 24 & 25 - 27 & 28 - 30 Number of days & 1 & 3 & 4 & 9 & 13 \end{matrix}

Find the mean number of pages written per day.

Q. Question 4
The following table gives the number of pages written by Sarika for completing her own book for 30 days.

\begin{matrix} Number of pages written per day & 16 - 18 & 19 - 21 & 22 - 24 & 25 - 27 & 28 - 30 Number of days & 1 & 3 & 4 & 9 & 13 \end{matrix}

Find the mean number of pages written per day.

Hari reads 22% of the pages of a book on the first day, 53% on the second day and 15% on the third day. If the number of pages remaining to be read is 30, find the total number of pages in the book.

Q. The numbers of pages of a book Rajesh read for the six consecutive days were 10, 15, 20, 8, 7, 12. Find the average number of pages he read every day.

Q. John's Science book has

10

chapters. The number of pages in each of the

10

chapters are

25, 11, 9, 18, 21, 24, 16, 13, 30, 12

. If two new chapters with

60

and

65

pages are added in the book, what would be the effect on median of the dataset?

Join BYJU'S Learning Program

the following table gives the number of pages written by sarika for completing his own book for 30 days.number of pages written per day =16-18, 19-21, 22-24, 24-27, 28-30,;number of days =1, 3, 4 ,9 , 13.calculate average number of pages written in 30 days.

Dear Student The given data is not continuous . Class Mid value,xi Number of Days,fi fixi 15.5-18.5 17 1 17 18.5-21.5 20 3 60 21.5-24.5 23 4 92 24.5-27.5 26 9 234 27.5-30.5 29 13 377 sum of fi = 30 sum of fixi =780 Mean (x) = (fixi / fi) = 780/30 =26 Therefore the mean of pages written =26 Regards