Mathematics
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.
Related Questions
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 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 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.
The data on the number of patients attending a hospital in a month are given below. Find the average (mean) number of patients attending the hospital in a month by using the shortcut method.
Take the assumed mean as 45. Give your answer correct to 2 decimal places.
Number of patients Number of days 10 – 20 5 20 – 30 2 30 – 40 7 40 – 50 9 50 – 60 2 60 – 70 5