Maharashtra State BoardSSC (English Medium) 8th Standard
Advertisement Remove all ads

The number of Science and Mathematics projects submitted by Model high school, Nandpur in last 20 years at the state level science exibition is: - Mathematics

Sum

The number of Science and Mathematics projects submitted by Model high school, Nandpur in last 20 years at the state level science exibition is:
2 3 4 1 2 3 1 5 4 2 3 1 3 5 4 3 2 2 3 2. Prepare a frequency table and find the mean of the data.

Advertisement Remove all ads

Solution

The frequency table of the data is follows:
 

Number of projects (`x_i`) Frequency (`f_i`) `f_ix_i`
1 3 1 x 3 = 3
2 6 2 x 6 = 12
3 6 3 x 6 = 18
4 3 4 x 3 = 12
5 2 5 x 2 = 10
  N = 20 `sum f_ix_i` = 55
 

Since, mean of the data = `(sum f_ix_i)/"N"`=5520=2.75

Hence, the mean of the data is 2.75.

  Is there an error in this question or solution?
Advertisement Remove all ads

APPEARS IN

Balbharati Mathematics 8th Standard Maharashtra State Board
Chapter 11 Statistics
Practice Set 11.1 | Q 4 | Page 70
Advertisement Remove all ads
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×