Question:
The standard deviation for the following distribution:Class 30-40 40-50 50-60 60-70 70-80 80-90 90-100 Frequency 3 7 12 15 8 3 2
The standard deviation for the following distribution:
| Class | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 | 80-90 | 90-100 |
| Frequency | 3 | 7 | 12 | 15 | 8 | 3 | 2 |
Updated On: Apr 27, 2024
- 12.89
- 13.98
- 14.18
- 15.38
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
The correct option is(C): 14.18
Was this answer helpful?
0
0
Top Questions on Variance and Standard Deviation
If the mean and the variance of 6, 4, a, 8, b, 12, 10, 13 are 9 and 9.25 respectively, then \(a + b + ab\) is equal to:
- JEE Main - 2025
- Mathematics
- Variance and Standard Deviation
- The mean and standard deviation of 100 observations are 40 and 5.1, respectively. By mistake one observation is taken as 50 instead of 40. If the correct mean and the correct standard deviation are $ \mu $ and $ \sigma $ respectively, then $ 10(\mu + \sigma) $ is equal to:
- JEE Main - 2025
- Mathematics
- Variance and Standard Deviation
- Let the mean and the standard deviation of the observations $ 2, 3, 4, 5, 7, a, b $ be $ 4 $ and $ \sqrt{2} $ respectively. Then the mean deviation about the mode of these observations is:
- JEE Main - 2025
- Mathematics
- Variance and Standard Deviation
- Variance of 240, 260, 270, 280
- KEAM - 2025
- Mathematics
- Variance and Standard Deviation
- Find the standard deviation of the numbers: -3, 0, 3, 8.
- KEAM - 2025
- Mathematics
- Variance and Standard Deviation
View More Questions
Questions Asked in CUET PG exam
- Lakulish sect is related to:
- CUET (PG) - 2025
- Ancient History
- One term in the given number series is wrong. Find out the wrong term.
- CUET (PG) - 2025
- Number Series
Match List-I with List-II
Choose the correct answer from the options given below:
- CUET (PG) - 2025
- Microbiology
- HPV is responsible mainly for:
- CUET (PG) - 2025
- Microbiology
- Which bacteria is called the DNA repair champion
- CUET (PG) - 2025
- Microbiology
View More Questions