Mathematics
The weights of 50 apples were recorded as given below. Calculate the mean weight, to the nearest gram, by the step Deviation Method.
| Weight in grams | No.of apples |
|---|---|
| 80 – 85 | 5 |
| 85 – 90 | 8 |
| 90 – 95 | 10 |
| 95 – 100 | 12 |
| 100 – 105 | 8 |
| 105 – 110 | 4 |
| 110 – 115 | 3 |
Related Questions
Calculate the mean of the following distribution using step deviation method.
Marks No.of students 0 – 10 10 10 – 20 9 20 – 30 25 30 – 40 30 40 – 50 16 50 – 60 10 Using step deviation method, calculate the mean of the following frequency distribution :
Class-interval Frequency 50 – 60 9 60 – 70 11 70 – 80 10 80 – 90 14 90 – 100 8 100 – 110 12 110 – 120 11 Weights of 60 eggs were recorded as given below :
Weights (in gms) Number of eggs 75 – 79 4 80 – 84 9 85 – 89 13 90 – 94 17 95 – 99 12 100 – 104 3 105 – 109 2 Calculate their mean weight to the nearest gm.
The following table gives marks scored by students in an examination :
Marks Number of students Less than 5 3 Less than 10 10 Less than 15 25 Less than 20 49 Less than 25 65 Less than 30 73 Less than 35 78 Less than 40 80 Calculate the mean marks correct to 2 decimal places.