Answer the following questions Create a scatterplot of hours studied vs. exam score
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Hours | Exam Grades |
1 | 62 |
2 | 66 |
2 | 68 |
2 | 67 |
3 | 74 |
3 | 78 |
3 | 75 |
4 | 76 |
4 | 81 |
5 | 82 |
6 | 82 |
6 | 85 |
7 | 88 |
8 | 86 |
9 | 84 |
9 | 89 |
9 | 92 |
10 | 86 |
11 | 97 |
12 | 91 |
Task: The following data set describes the hours a sample of scholars put into studying and the Exam scores they received.
Answer the following questions
- Create a scatterplot of hours studied vs. exam score
- Write 2-3 research questions for this study and supporting Hypotheses.
- Is there a relationship between hours vs exam scores? Describe the trends you observed from the scatterplot between the two variables.
- What is the value of the
correlation coefficient ? Briefly explain what this result means. - Create a scatterplot of hours studied vs. exam score with a regression line. Find an equation with the following form that best describes the relationship between the two variables:
ŷ = b0 + b1x
where:
- ŷ: The predicted value of the response variable
- b0: The y-intercept (the value of y when x is equal to zero)
- b1: The regression coefficient (the average increase in y for a one unit increase in x)
- x: The value of the predictor variable
5. Interpret this equation from above.
6.We can also use this equation to predict the score that a student will receive based on the number of hours studied. Find the predicted score for a student who studied for 6 hrs, 8 hrs, 10 hrs, and 12 hrs.
7.What is the value of the Coefficient of Determination, Describe your result.
8.Write up your conclusion based on the data provided.
plz run in spps and answer all the quesatisons
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