Curriculum
Course: Statistics — Third Secondary
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Curriculum

Statistics — Third Secondary

Unit 1: Correlation and Regression

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Unit 2: Advanced Statistical Measures

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Unit 3: Probability

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Unit 4: Random Variables

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Unit 5: The Normal Distribution

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Quiz

Regression — Lesson quiz

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  • Questions count: 3
  • Passing grade: 60%
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1.
In the regression equation ŷ = a + bx, what does b represent?
The mean of the y values
The slope, the expected change in y when x increases by one unit
The value of y when x = 0
The correlation coefficient between x and y
2.
In the least squares method, the sum of the squared differences between actual and predicted y should be:
as large as possible
zero always
as small as possible
equal to the number of data values
3.
For x: 3, 5, 7, 9 and y: 12, 10, 6, 2, what is the predicted value of y at x = 6 using the regression line of y on x?
27.9
10.2
7.5
17.7
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