Advertisements
Advertisements
प्रश्न
Calculate GM for the following table gives the weight of 31 persons in the sample survey.
| Weight (lbs): | 130 | 135 | 140 | 145 | 146 | 148 | 149 | 150 | 157 |
| Frequency | 3 | 4 | 6 | 6 | 3 | 5 | 2 | 1 | 1 |
Advertisements
उत्तर
| Weight (x) | Frequency (f) | log x | f log x |
| 130 | 3 | 2.1139 | 6.3417 |
| 135 | 4 | 2.1303 | 8.5212 |
| 140 | 6 | 2.1461 | 12.8766 |
| 145 | 6 | 2.1614 | 12.9684 |
| 146 | 3 | 2.1644 | 6.4932 |
| 148 | 5 | 2.1703 | 10.8515 |
| 149 | 2 | 2.1732 | 4.3464 |
| 150 | 1 | 2.1761 | 2.1761 |
| 157 | 1 | 2.1959 | 2.1959 |
| N = 31 | 66.771 |
Geometric Mean (GM) = Antilog `((sum "f log x")/"N")`
= Antilog `((66.771)/31)`
= Antilog (2.1539)
GM = 142.5 lbs
APPEARS IN
संबंधित प्रश्न
Find the first quartile and third quartile for the given observations.
2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22
The monthly incomes of 8 families in rupees in a certain locality are given below. Calculate the mean, the geometric mean and the harmonic mean and confirm that the relations among them holds true. Verify their relationships among averages.
| Family: | A | B | C | D | E | F | G | H |
| Income (Rs.): | 70 | 10 | 50 | 75 | 8 | 25 | 8 | 42 |
A man travelled by car for 3 days. He covered 480 km each day. On the first day, he drove for 10 hours at 48 km an hour. On the second day, he drove for 12 hours at 40 km an hour and for the last day he drove for 15 hours at 32 km. What is his average speed?
Calculate AM, GM and HM from the following data and also find its relationship:
| Marks: | 0 - 10 | 10 - 20 | 20 - 30 | 30 - 40 | 40 - 50 | 50 - 60 |
| No. of students: | 5 | 10 | 25 | 30 | 20 | 10 |
The best measure of central tendency is _________.
The correct relationship among A.M., G.M. and H.M. is
Median is the same as:
If the mean of 1, 2, 3, …, n is `(6"n")/11`, then the value of n is
The sum of deviations of all observations from the arithmetic mean of a dataset is always ______.
If each value in a dataset is increased by the same constant, what happens to the mean and median?
