Mathematics
Using the information given in the adjoining histogram, calculate the mean correct to one decimal place.
Related Questions
The mean of the following frequency distribution is 57.6 and the sum of all the frequencies is 50. Find the values of p and q :
Classes Frequency 0 - 20 7 20 - 40 p 40 - 60 12 60 - 80 q 80 - 100 8 100 - 120 5 The following table gives the life time in days of 100 electricity tubes of a certain make :
Lifetime in days No. of tubes less than 50 8 less than 100 23 less than 150 55 less than 200 81 less than 250 93 less than 300 100 Find the mean lifetime of electricity tubes.
A student scored the following marks in 11 questions of a question paper :
3, 4, 7, 2, 5, 6, 1, 8, 2, 5, 7.
Find the median marks.
For the following set of numbers, find the median :
10, 75, 3, 81, 17, 27, 4, 48, 12, 47, 9, 15.