Newnew

Variable Definition

Quiz1 Number of Correct Answers

GPA Previous Grade Point Average

Total Total number of points earned

Final Number of correct answers

Step 1:Write Section 1 of the DAA: TheData Analysis

Plan

● Name the four variables used in this analysis andwhether they are categorical

or continuous.

● State a research question, null hypothesis, and alternate hypothesis for total

and final.

● State a research question, null hypothesis, and alternate hypothesis for gpa and

quiz1.

Step 2:Write Section 2 of the DAA: Testing

Assumptions

Test for one of the assumptions of correlation – normality.

● Create a descriptive statistics table in statistical software to assess normality.

This table should include the four variables named above, including skew and

kurtosis for each variable.

● Paste the table in the DAA Template.

● Interpret the skewness and kurtosis values and determine whether the

assumption of normality was violated or not violated.

Step 3:Write Section 3 of the DAA: Results and

Interpretation

● Using the statistical software, paste the intercorrelationmatrix for the four

variables into the document.

● Below the output, first report the total-final correlation including degrees of

freedom, correlation coefficient, and p value. Specify whether or not to reject

the null hypothesis for this correlation.

● Second, report the gpa-quiz1 correlation including degrees of freedom,

correlation coefficient, and p value. Specify whether or not to reject the null

hypothesis for this correlation.

Step 4:Write Section 4 of the DAA: Statistical

Conclusions

● Provide a brief summary of your analysis and the conclusions drawn about

correlations.

● Analyze the limitations of the statistical test and/or possible alternative

explanations for your results.

Step 5:Write Section 5 of the DAA: Application

Analyze how youmight use correlations in your field of study.

● Name two variables that would work for such an analysis andwhy studying the

relationshipmay be important to the field or practice.

Submit your DAA template as an attachedWord document in the assignment area.

di IJASP

• •

- ILi lll. ~ l!!C ~~ 1%:: T -,. ~ Descriptives T-Tests ANOVA Mixed Models Regression Frequencies

"' Descriptive Statistics 0 0 0 0

' id Varia bles

I~ � A, tastna me

A fi rstname

I genderidentity

1d ethni city

I year

A lowup

111 section

' gpa

A extcr A review

I quiz.1

,d qu;z2

I quiz3

,d quiz.4

I quiz5 Split

, fin al � II

Tran spose descriptives table

� � statistics

� Bas ic plots

� Customizable pl ots

� Tables

______________________________________________________________________________

Correlations DAA Section 2: Testing Assumptions

Open grades.jasp.

Section 2 asks for a test of the normality assumption. Select the Descriptives option from the menu bar and a new window appears.

SCREENSHOTS TAKEN FROM JASP version 16.

QUESTIONS? EMAIL: [email protected]

•

•

T Descriptive Statistics

A id

& lastname

& firstname

A genderidentity

A ethnicity

II year

A lowup

A section

' gpa

A extcr

T Descriptive Statistics

,. id

& lastname

& firstname

A genderidenlity

A ethnicity

A extcr

A review

, quiz2

, quiz3

, quiz4

, quizS

, final

, total

�

�

�

�

! Variables !

Split

! Variables l quiz1

Split

0 0 0 0

0 0 0 0

II

Select quiz1. Select the arrow to move quiz1 to the Variables box.

Select gpa. Select the arrow to move gpa to the Variables box.

e ... Descriptive Statistics 0 0 0 0 ,. id a Variables

&, las tna me � quiz1

&, ftrstna me ' gpa

A gen deri dentity

A ethnicity

I year

A lowup

A sectio n

A extcr

A review

, quiz2

' quiz3

' quiz4 , quiz5

, final

Split

�

e ... Descriptive Statistics G O O 0 ,. id 1~

j variables j

It, lastname � , quiz1

It, ftrstname ' gpa

A gen deridentity , total

A ethnicity

I year

A lowup

A section

A extcr

Split

�

Select total. Select the arrow to move total to the Variables box.

Select final. Select the arrow to move final to the Variables box.

- ... Descriptive Statistics

,. id ._, lastname

&:, first11 am e ,. g:e n deri de ntity ,. ethnicity

I year ,. lowup ,. section ,. extcr ,. review

' quiz2

' quiz3

' quiz.4

' quiz5

perce nt ._, grade ,. passfail

Transpose descriptives table

� Statistics

e T Stati stics

Sample siz.e

Vali d

Missing

Central ten den cy

Mode

Median

Mean

Dispersion

S.E. mean

I~

Coefficient of variation

MAD ro bust

Variance

Minimum

�

�

Quantiles

Quartiles

Variables

' quiz.1

' gpa

' total

' final

Split

Cut points for: 4

Distrib

PJ Skewness

Kurtosi s

Std. deviation

MAD

!QR

Range

Maximum

0 0 0 0

11

equal groups

Select the Statistics button. New options appear.

Select Skewness and Kurtosis. (Deselect other options).

e

•

Descriptive Statistics

Des ori ·live Statistics

Q,lliZ1

Skewness S d. Enor of Skew rness � KurtosiiS S d. Error of Kurtosiis

grad es (C:\ U sers\ swowr\ On eDrive\ Deslctop)

- Desoniptives T-17ests A!NOVA

gpa total

Mixed Models

final

ti£. Cla.ssica.l

I Co rrelati on I Lin ear Reg ress,

Log isti c Reg ress ion

Generalize d Lin ear Model

__________________________________________________________

Copy/paste the Descriptive Statistics table into DAA Section 2.

Below the output, discuss the skewness and kurtosis values and how you determined whether the assumption of normality was met or violated.

DAA Section 3: Intercorrelation Matrix

Section 3 asks for the intercorrelation matrix. Select Regression from the toolbar. Select Classical Correlation; a new window appears.

• ... Correlation

gpa

extor

quiz3

quiz.4

quiz.5

, final

• .1.-.L- 1

Sample Correlation Coefficient

fJ Pearson's r

Spearman's rho

Kendall's tau-b

• ... Correlation

-111 smarr1e .. genderidentity .. ethnicity

1d year .. .. lowup

review

quiz:2

Sample Correlation Coefficient

fJ Pearson's r

Spearman's rho

Kendall's tau-b

H

H

• Variables

�

Partial out

�

Additional Options

Display pairwise

fJ Report significance

Flag significant correlations

Confidence intervals

Variables

� , quiz.1

Partial out

�

Additional Options

Display pairwise

fJ Report significance

Flag significant correlations

Confidence intervals

0 0 0 0

..

..

0 0 0 0

..

..

Select quiz1. Select the arrow to move quiz1 to the Variables box.

Select gpa. Select the arrow to move gpa to the Variables box.

- ,.. Correlation

-IUW U p ,. section ,. extcr ,. review

' q;uiz2

' q;uiz3

' Sample Co rrelation Coefficient

fJ Pearson's r

e

Spe arm an's rho

Ke ndal l's tau-b

,.. Correlation

-IUWU p ,. section ,. extcr ,. review

' quiz2

' quiz3

' ' Sam ple Co rrelation Coeffi cient

fJ Pearson's r

Spearman's rho

Kendall's tau-b

�

�

Variables

q;uiz1

gpa

Partial out

Additional Options

Display pairwise

fJ Report significance

Flag significant correlations

Confidence intervals

�

Variables

, qu iz1

' gpa

total

Partial out

Additional Options

Displ ay pairwise

fJ Re po rt significance

Flag significant correlations

Confi dence intervals

0 0 0 0

II

..

0 0 0 0

II

Select total. Select the arrow to move total to the Variables box.

Select final. Select the arrow to move final to the Variables box.

-

-... Correlation

I yea:1 ,. lowup ,. section ,. extcr ,. review

' quiz2

' quiz3

' quiz.4

' quiz5

, percent

Sample Correlation Coefficient

rJ Pearson's r

Spearman's rho

Kendal l's tau-b

Co1nre tatiio n

Pears,on's Cmrelatiorns

Variable

1. q j!z:1

2. ,g a1

3. total

4. fi rnail

Pearson's r p-value

Pearson's r p-value

Pears,oni's r p-value

Pears,oni's r p-value

H

"' p < .05, ..,, p < .01 ., ... p < .001

Variable s

� , quiz.1

' gpa

total

" fin;:,I

Partial out

�

Additional Options

Display pairwise

rJ Report significance

rJ Flag significant correlations

Confidence intervals

q iz1 ,gpai total

0 0 0 0

~ ..

finial

Select Flag significant correlations

Copy and paste the intercorrelation matrix into DAA Section 3.

Below the output, report the total-final correlation including degrees of freedom, correlation coefficient, and p value. Specify whether or not to

reject the null hypothesis for this correlation. Second, report the gpa-quiz1 correlation including degrees of freedom, correlation coefficient, and p

value. Specify whether or not to reject the null hypothesis for this correlation.

0

Des,c1r"'ptive Statiistics

De.s criplive S arlislics

Q;lli2 1

Ske\ivness SM. Error of Skewness � Kurtos is Std. Error of Kurtosf,s

iC01nrelaUon

Pearson's Correlarlioris

Variable

1. quiz1

2. ,gpa1

3. total

4. final

Pearson's r p-value

Pearson's r p-value

Pearson's r p-value

Pearson's r p-value

* p < .05, .... p < .0 1,, * ... p < .()01

quiz1

totall final

,gpa total final

DAA Sections 2 and 3 should look like this page.

Testing Assumptions

Interpret the skewness and kurtosis values and how you determined whether the

assumption of normality was met or violated.

Results & Interpretation

Below the output, first report the total-final correlation including degrees of freedom,

correlation coefficient, and p value. Specify whether or not to reject the null hypothesis for this

correlation. Second, report the gpa-quiz1 correlation including degrees of freedom, correlation

coefficient, and p value. Specify whether or not to reject the null hypothesis for this correlation.