Advertisements
Advertisements
प्रश्न
The Empirical relation between the three measures of central tendency is ______.
पर्याय
Mode = 3 Mean – 2 Median
Mode = 2 Median – 3 Mean
Mode = 2 Mean – 3 Median
Mode = 3 Median – 2 Mean
उत्तर
The Empirical relation between the three measures of central tendency is Mode = 3 Median – 2 Mean.
APPEARS IN
संबंधित प्रश्न
Describe some fundamental characteristics of statistics.
Explain the meaning of the term Class-integral.
Explain the meaning of the term Class-size.
Explain the meaning of the term True class limits.
A survey regarding the heights (in cm) of 50 girls of a class was conducted and the following data was obtained:
| Height in cm |
120 – 130 | 130 – 140 | 140 – 150 | 150 – 160 | 160 – 170 |
| No. of girls |
2 | 8 | 12 | 20 | 8 |
Find the mean, median and mode of the above data.
The table below shows the daily expenditure on food of 30 households in a locality:
| Daily expenditure (in Rs) | Number of households |
| 100 – 150 | 6 |
| 150 – 200 | 7 |
| 200 – 250 | 12 |
| 250 – 300 | 3 |
| 300 – 350 | 2 |
Find the mean and median daily expenditure on food.
In a class test, 50 students obtained marks as follows:
| Marks obtained | 0 – 20 | 20 – 40 | 40 – 60 | 60 – 80 | 80 – 100 |
| Number of Students | 4 | 6 | 25 | 10 | 5 |
In a class test, 50 students obtained marks as follows:
While calculating the mean of a given data by the assumed-mean method, the following
values were obtained.
`A=25, sum f_i d_i=110, sum f_i= 50`
Find the mean.
The observation 29, 32, 48, 50, x, x+2, 72, 78, 84, 95 are arranged in ascending order. What is the value of x if the median of the data is 63?
In the following data, find the values of p and q. Also, find the median class and modal class.
| Class | Frequency (f) | Cumulative frequency (cf) |
| 100 – 200 | 11 | 11 |
| 200 – 300 | 12 | p |
| 300 – 400 | 10 | 33 |
| 400- 500 | Q | 46 |
| 500 – 600 | 20 | 66 |
| 600 – 700 | 14 | 80 |
Find the class marks of classes 10−25 and 35−55.
Explain the meaning of the following terms: Variate
Explain the meaning of the following terms: Class mark
The times, in seconds, taken by 150 athletes to run a 110 m hurdle race are tabulated below:
| Class | Frequency |
| 13.8 - 14 | 3 |
| 14 - 14.2 | 4 |
| 14.2 - 14.4 | 6 |
| 14.4 - 14.6 | 69 |
| 14.6 - 14.8 | 48 |
| 14.8 - 15.0 | 20 |
The number of athletes who completed the race in less than 14.6 seconds is?
The monthly pocket money of ten friends is given below :
₹ 80, ₹ 65, ₹ 35, ₹ 65, ₹ 50, ₹ 30, ₹ 60, ₹ 35, ₹ 65, ₹ 30
What is the highest pocket money?
The time, in seconds, taken by 150 athletes to run a 100 m hurdle race are tabulated below:
| Time (sec.) | 13 – 14 | 14 – 15 | 15 – 16 | 16 – 17 | 17 – 18 | 18 – 19 |
| Number of Athletes | 2 | 4 | 5 | 71 | 48 | 20 |
The number of athletes who completed the race in less than 17 seconds is:
