Find the mean of following distribution:
x: 12 16 20 24 28 32
f : 5 7 8 5 3 2
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60
Mean:
The mean of a number of observation is the sum of the values of all the observations divided by the total number of observations.
Mean=sum of all the observations/total number of observations
Direct method:
In this method find the class marks of class interval. These class marks would serve as the representative of whole class and are represented by xi. For each class interval we have the frequency fi corresponding to the class mark xi.
Class marks=( lower limit + upper limit)/2
Then find the product of fi, & xi for each class interval. Find Σ fi & Σfixi.
Use the formula :
Mean = Σfixi/ Σfi
SOLUTION IS IN THE ATTACHMENT…
HOPE THIS WILL HELP YOU....
The mean of a number of observation is the sum of the values of all the observations divided by the total number of observations.
Mean=sum of all the observations/total number of observations
Direct method:
In this method find the class marks of class interval. These class marks would serve as the representative of whole class and are represented by xi. For each class interval we have the frequency fi corresponding to the class mark xi.
Class marks=( lower limit + upper limit)/2
Then find the product of fi, & xi for each class interval. Find Σ fi & Σfixi.
Use the formula :
Mean = Σfixi/ Σfi
SOLUTION IS IN THE ATTACHMENT…
HOPE THIS WILL HELP YOU....
Attachments:
Answered by
15
Answer:hope it helps you☺️
Step-by-step explanation:
Attachments:
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