Determine this mean number of points x, earned on the test.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A sample of 30 students at a local college were given a test consisting of 10 questions about current news
distribution of the number of correct answers given is recorded in the frequency column of the table. Questions that were not
answered were marked incorrect. The frequency represents how many of the 30 students who took the test got a certain number
of answers correct. For example, three students answered five questions correctly.
Determine this mean number of points x, earned on the test. Give your answer precise to one decimal place
![A sample of 30 students at a local college were given a test consisting of 10 questions about current news events. The distribution of the number of correct answers given is recorded in the frequency column of the table. Questions that were not answered were marked incorrect. The frequency represents how many of the 30 students who took the test got a certain number of answers correct. For example, three students answered five questions correctly.
| Number correct | Frequency |
|----------------|-----------|
| 0 | 3 |
| 1 | 2 |
| 2 | 2 |
| 3 | 4 |
| 4 | 1 |
| 5 | 3 |
| 6 | 2 |
| 7 | 2 |
| 8 | 4 |
| 9 | 5 |
| 10 | 2 |
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Determine the mean number of points, \( \bar{x} \), earned on the test. Give your answer precise to one decimal place.
\[ \bar{x} = \]
(points per student)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdfd90e26-30e4-432b-b55b-356c7ac6adda%2Fb132200d-da70-43fa-8fc2-c4e65dfc08b5%2Fqzqqebe.jpeg&w=3840&q=75)
Transcribed Image Text:A sample of 30 students at a local college were given a test consisting of 10 questions about current news events. The distribution of the number of correct answers given is recorded in the frequency column of the table. Questions that were not answered were marked incorrect. The frequency represents how many of the 30 students who took the test got a certain number of answers correct. For example, three students answered five questions correctly.
| Number correct | Frequency |
|----------------|-----------|
| 0 | 3 |
| 1 | 2 |
| 2 | 2 |
| 3 | 4 |
| 4 | 1 |
| 5 | 3 |
| 6 | 2 |
| 7 | 2 |
| 8 | 4 |
| 9 | 5 |
| 10 | 2 |
You may download the data in your preferred format if you wish.
- CrunchIt
- CSV
- Excel
- JMP
- MacText
- Minitab
- PC Text
- R
- SPSS
- TI Calc
Determine the mean number of points, \( \bar{x} \), earned on the test. Give your answer precise to one decimal place.
\[ \bar{x} = \]
(points per student)
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