Q. 214.3( 8 Votes )
The weights of tea in 70 packets are shown in the following table:
Find the mean weight of packets using step - deviation method.
Answer :
We will find the mean weight of packet using step - deviation method, where A = Assumed mean and h = length of class interval.
Here, let A = 202.5 and h = 1
We have got
A = 202.5, h = 1, Σfi = 70 & Σfiui = - 38
∵ mean is given by
⇒ 
⇒ 
Thus, mean is 201.96 g.
Rate this question :
How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
RELATED QUESTIONS :
Each question consists of two statements, namely, Assertion (A) and Reason (R). For selecting the correct answer, use the following code:
The mode of the above data is 12.4.
The value of the variable which occurs most often is the mode.
RS Aggarwal - Mathematics
Find the mean of the following data:
Find the mean of the following data:
Find the mean, median and mode of the following data:
Find the mean of the following frequency distribution:
Find the mean of the following frequency distribution:
Find the mean of the following frequency distribution:
Consider the following frequency distribution:
The upper limit of the median class is
RS Aggarwal - Mathematics
