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England schools
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England university
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Scotland schools
Taxonomy: mathcentre
Taxonomy: Kind of activity
Taxonomy: Context
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History
Bill Foster 12 years, 3 months ago
Created this.| Name | Status | Author | Last Modified | |
|---|---|---|---|---|
| Regression2 | draft | Bill Foster | 06/08/2020 08:41 | |
| Regression | Has some problems | Yvonne Wancke | 16/02/2022 15:32 | |
| PRAC Regression | Ready to use | Yvonne Wancke | 26/06/2023 16:50 | |
| Yvonne's copy of PRAC Regression | Ready to use | Yvonne Wancke | 01/03/2023 12:25 | |
| S2 EXAM Regression | Ready to use | Yvonne Wancke | 05/05/2023 04:33 |
There are 5 other versions that do you not have access to.
| Name | Type | Generated Value |
|---|
| tsqovern | list |
[ 47334.4, 26316.9 ]
|
||||
| a | number |
16.549
|
||||
| b | number |
0.505
|
||||
| obj | list |
List of 10 items
|
||||
| r1 | list |
List of 10 items
|
||||
| r2 | list |
List of 10 items
|
||||
| ss | list |
[ 549.6, 370.1 ]
|
||||
| res | list |
List of 10 items
|
||||
| ssq | list |
[ 47884, 26687 ]
|
||||
| n | integer |
10
|
||||
| a1 | integer |
19
|
||||
| ch | integer |
5
|
||||
| spxy | number |
277.6
|
||||
| t | list |
[ 688, 513 ]
|
||||
| tol | number |
0.001
|
||||
| sc | integer |
60
|
||||
| sxy | number |
35572
|
||||
| b1 | number |
0.45
|
||||
| ls | number |
46.85
|
Generated value: list
- n
- t
This variable doesn't seem to be used anywhere.
Gap-fill
Ask the student a question, and give any hints about how they should answer this part.
Calculate the equation of the best fitting regression line:
\[Y = a + b \times X.\] Find $a$ and $b$ to 5 decimal places, then input them below to 3 decimal places. You will use these approximate values in the rest of the question.
$b=\;$
You are given the following information:
| First Test$(X)$ | $\sum x=\;\var{t[0]}$ | $\sum x^2=\;\var{ssq[0]}$ |
|---|---|---|
| Later Score$(Y)$ | $\sum y=\;\var{t[1]}$ | $\sum y^2=\;\var{ssq[1]}$ |
Also you are given $\sum xy = \var{sxy}$.
Click on Show steps if you want more information on calculating $a$ and $b$. You will not lose any marks by doing so.
Use this tab to check that this question works as expected.
| Part | Test | Passed? |
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| Hasn't run yet | ||
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| Information only | ||
| Number entry | ||
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| Gap-fill | ||
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This question is used in the following exams:
- Regression Practice 1 by Bill Foster in Bill's workspace.
- Maths Support: Linear regression by Christian Lawson-Perfect in Maths Support Wiki.
- mathcentre: Linear regression by Newcastle University Mathematics and Statistics in mathcentre.
- David's copy of mathcentre: Linear regression by David Rickard in David's workspace.
- Statistics: 1 by Aneela Arshad in Aneela's workspace.
- James's copy of Statistics: 1 by James Eustace in James's workspace.
- Morgiane's copy of Maths Support: Linear regression by Morgiane Richard in Morgiane's workspace.
- mathcentre: Linear regression by Michael Proudman in Mathcentre based Materials.