Advertisements
Advertisements
Question
Find the range of given data: 46, 35, 78, 90, 20, 56, 45, 76.
Advertisements
Solution
Given data is 46, 35, 78, 90, 20, 56, 45, 76.
Here, Highest value = 90
Lowest value = 20
We know, Range = Highest Value – Lowest Value
= 90 – 20
= 70
Hence, the range is 70.
APPEARS IN
RELATED QUESTIONS
Which of the two – the primary or the secondary data – is more reliable and why?
Explain the meaning of the term Class-integral.
Explain the meaning of the term Class limits.
Explain the meaning of the term Frequency.
Define cumulative frequency distribution.
Find the mean, median and mode of the following data:
| Class | 0 – 50 | 50 – 100 | 100 – 150 | 150 – 200 | 200 – 250 | 250 – 300 | 300 - 350 |
| Frequency | 2 | 3 | 5 | 6 | 5 | 3 | 1 |
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.
For a certain distribution, mode and median were found to be 1000 and 1250 respectively. Find mean for this distribution using an empirical relation.
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:
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?
Define primary data and secondary data.
Explain the meaning of the following terms: Class mark
Explain the meaning of the following terms: Frequency
Can the experimental probability of an event be a negative number? If not, why?
The monthly pocket money of ten friends is given below:
₹ 80, ₹ 65, ₹ 35, ₹ 65, ₹ 50, ₹ 30, ₹ 60, ₹ 35, ₹ 65, ₹ 30
What is the lowest 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:
