Q. 284.7( 3 Votes )
Weight of 60 eggs were recorded as given below:
Calculate their mean weight to the nearest gram.
Answer :
We will find the mean weight using step - deviation method, where A = Assumed mean and h = length of class interval.
Here, let A = 92 and h = 5
Since, the class intervals are inclusive type, we’ll first convert it into exclusive type by extending the class interval from both the ends.
We have got
A = 92, h = 5, Σfi = 60 & Σfiui = - 19
∵ mean is given by
⇒ 
⇒ 
Thus, mean weight is 90 g.
Rate this question :
How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
RELATED QUESTIONS :
Consider the following frequency distribution:
The upper limit of the median class is
RS Aggarwal - MathematicsFind the mean of the following frequency distribution:
Find the mean of the following frequency distribution:
Find the mean of the following frequency distribution:
The following table gives the number of branches and number of plants in the garden of a school.
In the first proof reading of a book containing 300 pages the following distribution of misprints was obtained:
Find the average number of misprints per page.
RD Sharma - MathematicsThe following table gives the number of children of 150 families in a village
Find the average number of children per family.
RD Sharma - MathematicsThe number of students absent in a class were recorded every day for 120 days and the information is given in the following frequency table:
Find the mean number of students absent per day.
RD Sharma - Mathematics
