PRAC Regression

Error

There was an error loading the page.

Contributors

Feedback

From users who are members of Yvonne's workspace :

Yvonne Wancke

said

Ready to use

4 years, 1 month ago

History

○

Yvonne Wancke 4 years, 1 month ago

Published this.

○

Yvonne Wancke 4 years, 1 month ago

Gave some feedback: Ready to use

○

Yvonne Wancke 4 years, 1 month ago

Created this as a copy of Regression.

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.

Question statement

A school compares the exam results for students in two tests. Here are the results.

Student	$\var{obj[0]}$	$\var{obj[1]}$	$\var{obj[2]}$	$\var{obj[3]}$	$\var{obj[4]}$	$\var{obj[5]}$	$\var{obj[6]}$	$\var{obj[7]}$	$\var{obj[8]}$	$\var{obj[9]}$
First Test $(X)$	$\var{r1[0]}$	$\var{r1[1]}$	$\var{r1[2]}$	$\var{r1[3]}$	$\var{r1[4]}$	$\var{r1[5]}$	$\var{r1[6]}$	$\var{r1[7]}$	$\var{r1[8]}$	$\var{r1[9]}$
Later Score $(Y)$	$\var{r2[0]}$	$\var{r2[1]}$	$\var{r2[2]}$	$\var{r2[3]}$	$\var{r2[4]}$	$\var{r2[5]}$	$\var{r2[6]}$	$\var{r2[7]}$	$\var{r2[8]}$	$\var{r2[9]}$

Give any introductory information the student needs.

			Name	Type	Generated Value

tsqovern	list	[ 40704.4, 17222.5 ]
a	number	29.740
b	number	0.184
obj	list	List of 10 items
r1	list	List of 10 items
r2	list	List of 10 items
ss	list	[ 645.6, 272.5 ]
res	list	List of 10 items
ssq	list	[ 41350, 17495 ]
n	integer	10
a1	integer	14
ch	integer	8
spxy	number	119
t	list	[ 638, 415 ]
tol	number	0.001
sc	integer	64
sxy	number	26596
b1	number	0.45
ls	number	41.52

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
[t[0]^2/n,t[1]^2/n]

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `list`

[ 40704.4, 17222.5 ]

← Depends on:

This variable doesn't seem to be used anywhere.

Parts

Gap-fill
1. Gap Gap 0. Number entry
  Add
2. Gap Gap 1. Number entry
  Add

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 + bx

Find $a$ and $b$ to 5 decimal places, then input them below to 3 decimal places.

$b=\;$Gap 0., $a=\;$Gap 1. (enter both to 3 decimal places).

Advice

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Number entry
Number entry		Hasn't run yet

This question is used in the following exams:

PRACTICE Maths Mini Test 1 (S2) by Yvonne Wancke in Yvonne's workspace.
PRAC online S2 exam by Yvonne Wancke in Yvonne's workspace.

Loading...

Error

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Yvonne Wancke 4 years, 1 month ago

Yvonne Wancke 4 years, 1 month ago

Yvonne Wancke 4 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: `list`

Parts

Gap-fill

Loading...

Error

PRAC Regression

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Yvonne Wancke 4 years, 1 month ago

Yvonne Wancke 4 years, 1 month ago

Yvonne Wancke 4 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: list

Parts

Gap-fill

Generated value: `list`