taking the class mark (denoted by a) of the class interval 90-120 as the assumed mean of daily income by the 'assumed mean’ method...
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Step-by-step explanation:
Class mark can be find out by adding daily income divide by 2. Ex in table there is 0-30 = 30+0÷2 = 15. 30+60÷2 = 90÷2 = 45.
We can find A by adding class mark and divode it by the no. of daily income in the above ex it is 6 daily income so it will be divided by 6
Multiplying frequency and d you will get ans add everyone
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shiny209:
but the assumed mean is taken at 90-120 na
yes then
what ans you are getting or confused that how i got
why did you take 75 as assumed mean?
because after adding All the class mark divite it by 5 and then the number i got was not there so i take below that and it was 75
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