CBSE Class 10 - Arithmetic Mean of Grouped Data Videos
Arithmetic Mean of Grouped Data
The mean of 10 observations is 8, and if each observation is divided by 2, then the new mean is
The mean of 8 numbers is 20. If 3 is subtracted from every number, then what will be the new mean?
Which of the following is the formula for mean using the step deviation method?
- find the mean of 20 numbers such that if the mean of 8 of them is 10 and the mean of 10 of them is 12 the last two numbers are 8 and 12
- 9.If the mean of the following data is 91.Find the missing frequency :- C. I. Frequency 0-30. 12 30-60. 21 60-90. X 90-120. 52 120-150. Y 150-180. 11 Total 150
by assume mean method
- what is statistics
- assumed mean method
Write formula for find out the mean of the data using assumed mean
- Mean of 100 numbers was found to be 50. But later on, it was observed that one of the number 150 was wrongly taken as 50
- The arithmetic mean of the following frequency distribution is 50 .C.I 0-10 ,10-20, 20-30, 30-40,40-50.frequency: 16 p 30 32 14. Find the value of p
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