[Step-by-Step] You are given the following frequency distribution for the number of errors 55 students made in a test Errors Frequency 0-2 14 3-5 13 6-8 11
Question: You are given the following frequency distribution for the number of errors 55 students made in a test
| Errors | Frequency |
| 0-2 | 14 |
| 3-5 | 13 |
| 6-8 | 11 |
| 9-11 | 8 |
| 12-14 | 9 |
Find: a. mean b. variance c. standard deviation.
Deliverable: Word Document 
![[Step-by-Step] An aptitude test has a mean](/images/solutions/MC-solution-library-48748.jpg "[Step-by-Step] An aptitude test has a mean of 220 and standard deviation")
[Step-by-Step] An aptitude test has a mean of 220 and standard deviation
![[Solution Library] You are given the following](/images/solutions/MC-solution-library-48749.jpg "[Solution Library] You are given the following data. x y 2 14 3")
[Solution Library] You are given the following data. x y 2 14 3
![[See Steps] The bar graph below compares](/images/solutions/MC-solution-library-48750.jpg "[See Steps] The bar graph below compares the mean time in seconds")
[See Steps] The bar graph below compares the mean time in seconds
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Confidence Interval for Variance Calculator - MathCracker.com