CBSE Class 10 - Arithmetic Mean of Grouped Data Videos
Arithmetic Mean of Grouped Data
This video explains how to calculate arithmetic mean of grouped data by using three different methods, Direct, short cut and 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
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by assume mean method
- Statistics
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solve
- what is statistics
- assumed mean method
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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
