Advertisements
Advertisements
प्रश्न
The geometric mean of two numbers 8 and 18 shall be
विकल्प
12
13
15
11.08
Advertisements
उत्तर
12
Explanation:
GM = `root"n"("X"_1 xx "X"_2 xx "X"_3 xx ... xx "X"_"n")`
= `root2(8 xx 18)`
= `root2(4 xx 2 xx 9 xx 2)`
= `sqrt((2 xx 2) xx (2 xx 2) xx (3 xx 3))`
= 2 × 2 × 3
= 12
APPEARS IN
संबंधित प्रश्न
Find lower quartile, upper quartile, 7th decile, 5th decile and 60th percentile for the following frequency distribution.
| Wages | 10 - 20 | 20 - 30 | 30 - 40 | 40 - 50 | 50 - 60 | 60 - 70 | 70 - 80 |
| Frequency | 1 | 3 | 11 | 21 | 43 | 32 | 9 |
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 |
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 |
The best measure of central tendency is _________.
The correct relationship among A.M., G.M. and H.M. is
Find out the GM for the following.
| Yield of Rice (tones) | No. of farms |
| 7.5 - 10.5 | 5 |
| 10.5 - 13.5 | 9 |
| 13.5 - 16.5 | 19 |
| 16.5 - 19.5 | 23 |
| 19.5 - 22.5 | 7 |
| 22.5 - 25.5 | 4 |
| 25.5 - 28.5 | 1 |
The measure of central tendency that does not get affected by extreme values:
Answer the following question in about 30 words:
Define the mean.
Which of the following best describes a 'measure of central tendency'?
A frequency distribution has two classes with the highest and equal frequencies. What can be said about its mode?
