Assessment 1 - Assignment
Unit: STA101 – Statistics for Business
Total Marks:This assignment is worth 40 marks (40 % of the total marks in the unit).
•Students are required to cover all stated requirements.
•Your answer must be both uploaded to Moodle in word file and handed over a printed copy.
•You need to support your answers with appropriate Harvard style references where necessary.
•Include a title/cover page containing the subject title and code .
Each of the following question worth 10 marks, please answer all of them. If needed please use Harvard referencing style. There is no word limit, but it is necessary that you provide answers with explanations.
Question 1: (10 marks)
Given the following sample data:
1. Calculate the covariance and the correlation coefficient
2. Comment on the relationship between x and y
3. Determine the least squares line.
|4. Draw the scatter diagram and plot the least squares line. |
a. Is the coefficient of Price significantly different from zero at α = .05?
b. What does the R2 tell you?
c. Given these results, would you conclude that a higher price implies higher sound quality?
|Statistic||Coefficients||Std Error||t Stat||P-value||Lower 95%||Upper 95%|
Question4: (10 marks)
Below are monthly rents paid by 30 students who live off campus:
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