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Reporting an Independent Sample t-test Note – that the reporting format shown in this learning module is for APA. For other formats consult specific format guides. It is also recommended to consult the latest APA manual to compare what is described in this learning module with the most updated formats for APA.

Reporting an independent sample t test

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Page 1: Reporting an independent sample t test

Reporting an Independent Sample t-test

Note – that the reporting format shown in this learning module is for APA. For other formats consult specific format guides.

It is also recommended to consult the latest APA manual to compare what is described in this learning module with the

most updated formats for APA.

Page 2: Reporting an independent sample t test

Reporting the Study using APA

Page 3: Reporting an independent sample t test

Reporting the Study using APA• You can report data from your own experiments by

using the template below.

Page 4: Reporting an independent sample t test

Reporting the Study using APA• You can report data from your own experiments by

using the template below.

• “An independent-samples t-test was conducted to compare (your DV measure) _________ in (IV level / condition 1) ________and (IV level / condition 2) ________ conditions.”

Page 5: Reporting an independent sample t test

Reporting the Study using APA• Here is an example:

Page 6: Reporting an independent sample t test

Reporting the Study using APA• Here is an example:

• “A single-samples t-test was conducted to compare truck driver drowsiness scores for the country music listening and the no country music listening conditions.”

Page 7: Reporting an independent sample t test

Reporting the Study using APA• Here is an example:

• “A single-samples t-test was conducted to compare truck driver drowsiness scores for the country music listening and the no country music listening conditions.”

Page 8: Reporting an independent sample t test

Reporting the Study using APA• Here is an example:

• “A single-samples t-test was conducted to compare truck driver drowsiness scores for the country music listening and the no country music listening conditions.”

Level 2Level 1

Dependent Variable

Independent Variable

Page 9: Reporting an independent sample t test

Reporting Results using APA

Page 10: Reporting an independent sample t test

Reporting Results using APA

• You want to tell your reader whether or not there was a significant difference between condition means. You can report data from your own experiments by using the template below.

Page 11: Reporting an independent sample t test

Reporting Results using APA

• You want to tell your reader whether or not there was a significant difference between condition means. You can report data from your own experiments by using the template below.

• “There was a significant (not a significant) difference in the scores for IV level 1 (M=___, SD=___) and IV level 2 (M=___, SD=___) conditions; t(__)=____, p = ____”

Page 12: Reporting an independent sample t test

Reporting Results using APA

• Just fill in the blanks by using in this case the SPSS output

Page 13: Reporting an independent sample t test

Reporting Results using APA

• Just fill in the blanks by using in this case the SPSS output• Let’s start by filing in the Mean and Standard

Deviation for each condition.

Page 14: Reporting an independent sample t test

Reporting Results using APA

• Just fill in the blanks by using in this case the SPSS output• Let’s start by filing in the Mean and Standard

Deviation for each condition. “There was a significant difference in the scores for

country music listening (M=___, SD=___) and no country music listening(M=___, SD=___) conditions;

t(__)=___, p=___”Country Music Listening N Mean Std.

DeviationStd. Error Mean

DVWORDS1.00 5 4.2000 1.3038 0.5831

2.00 5 2.2000 0.8367 0.3742

Page 15: Reporting an independent sample t test

Reporting Results using APA

• Just fill in the blanks by using in this case the SPSS output• Let’s start by filing in the Mean and Standard

Deviation for each condition. “There was a significant difference in the scores for country music listening (M=4.20, SD=___) and no

country music listening(M=___, SD=___) conditions; t(__)=___, p=___”

Country Music Listening N Mean Std.

DeviationStd. Error Mean

DVWORDS1.00 5 4.2000 1.3038 0.5831

2.00 5 2.2000 0.8367 0.3742

Page 16: Reporting an independent sample t test

Reporting Results using APA

• Just fill in the blanks by using in this case the SPSS output• Let’s start by filing in the Mean and Standard

Deviation for each condition. “There was a significant difference in the scores for country music listening (M=4.20, SD=1.30) and no

country music listening(M=___, SD=___) conditions; t(__)=___, p=___”

Country Music Listening N Mean Std.

DeviationStd. Error Mean

DVWORDS1.00 5 4.2000 1.3038 0.5831

2.00 5 2.2000 0.8367 0.3742

Page 17: Reporting an independent sample t test

Reporting Results using APA

• Just fill in the blanks by using in this case the SPSS output• Let’s start by filing in the Mean and Standard

Deviation for each condition. “There was a significant difference in the scores for country music listening (M=4.20, SD=1.30) and no

country music listening(M=2.20, SD=___) conditions; t(__)=___, p=___”

Country Music Listening N Mean Std.

DeviationStd. Error Mean

DVWORDS1.00 5 4.2000 1.3038 0.5831

2.00 5 2.2000 0.8367 0.3742

Page 18: Reporting an independent sample t test

Reporting Results using APA

• Just fill in the blanks by using in this case the SPSS output• Let’s start by filing in the Mean and Standard

Deviation for each condition. “There was a significant difference in the scores for country music listening (M=4.20, SD=1.30) and no

country music listening(M=2.20, SD=0.84) conditions; t(__)=___, p=___”

Country Music Listening N Mean Std.

DeviationStd. Error Mean

DVWORDS1.00 5 4.2000 1.3038 0.5831

2.00 5 2.2000 0.8367 0.3742

Page 19: Reporting an independent sample t test

Reporting Results using APA

• Just fill in the blanks by using in this case the SPSS output• Let’s start by filing in the Mean and Standard

Deviation for each condition. “There was a significant difference in the scores for country music listening (M=4.20, SD=1.30) and no

country music listening(M=2.20, SD=0.84) conditions; t(__)=___, p=___”

Country Music Listening N Mean Std.

DeviationStd. Error Mean

DVWORDS1.00 5 4.2000 1.3038 0.5831

2.00 5 2.2000 0.8367 0.3742

Page 20: Reporting an independent sample t test

Reporting Results using APA• Now we’ll finish up by filling in the values related to the T-

Test. Here we enter the degrees of freedom (df), the t-value (t), and the Sig. (2-tailed) value (often referred to as the p value).

Page 21: Reporting an independent sample t test

Reporting Results using APA• Now we’ll finish up by filling in the values related to the T-

Test. Here we enter the degrees of freedom (df), the t-value (t), and the Sig. (2-tailed) value (often referred to as the p value).

“There was a significant difference in the scores for country music listening (M=4.2, SD=1.3) and no

country music listening (M=2.2, SD=0.84) Conditions; t(_)=___, p=_____.”

Levene’s Test for quality of Variances T-test for Equality of Means

F Sig t dfSig.

(2-tailes)Mean

DifferenceStd. Error Difference

95% Confidence Interval of the

Difference

Lower Upper

DVWORD Equal Variance Assumed

1.493 0.257 2.887 8 0.020 2.0000 0.6928 0.4024 3.5976

Equal Variance not Assumed

2.887 6,817 0.024 2.0000 0.6928 0.3528 3.6472

Page 22: Reporting an independent sample t test

Reporting Results using APA• Now we’ll finish up by filling in the values related to the T-

Test. Here we enter the degrees of freedom (df), the t-value (t), and the Sig. (2-tailed) value (often referred to as the p value).

“There was a significant difference in the scores for country music listening (M=4.2, SD=1.3) and no

country music listening (M=2.2, SD=0.84) Conditions; t(8)=___, p=_____.”

Levene’s Test for quality of Variances T-test for Equality of Means

F Sig t dfSig.

(2-tailes)Mean

DifferenceStd. Error Difference

95% Confidence Interval of the

Difference

Lower Upper

DVWORD Equal Variance Assumed

1.493 0.257 2.887 8 0.020 2.0000 0.6928 0.4024 3.5976

Equal Variance not Assumed

2.887 6,817 0.024 2.0000 0.6928 0.3528 3.6472

Page 23: Reporting an independent sample t test

Reporting Results using APA• Now we’ll finish up by filling in the values related to the T-

Test. Here we enter the degrees of freedom (df), the t-value (t), and the Sig. (2-tailed) value (often referred to as the p value).

“There was a significant difference in the scores for country music listening (M=4.2, SD=1.3) and no

country music listening (M=2.2, SD=0.84) Conditions; t(8)=2.89, p=_____.”

Levene’s Test for quality of Variances T-test for Equality of Means

F Sig t dfSig.

(2-tailes)Mean

DifferenceStd. Error Difference

95% Confidence Interval of the

Difference

Lower Upper

DVWORD Equal Variance Assumed

1.493 0.257 2.887 8 0.020 2.0000 0.6928 0.4024 3.5976

Equal Variance not Assumed

2.887 6,817 0.024 2.0000 0.6928 0.3528 3.6472

Page 24: Reporting an independent sample t test

Reporting Results using APA• Now we’ll finish up by filling in the values related to the T-

Test. Here we enter the degrees of freedom (df), the t-value (t), and the Sig. (2-tailed) value (often referred to as the p value).

“There was a significant difference in the scores for country music listening (M=4.2, SD=1.3) and no

country music listening (M=2.2, SD=0.84) Conditions; t(8)=2.89, p=0.02.”

Levene’s Test for quality of Variances T-test for Equality of Means

F Sig t dfSig.

(2-tailes)Mean

DifferenceStd. Error Difference

95% Confidence Interval of the

Difference

Lower Upper

DVWORD Equal Variance Assumed

1.493 0.257 2.887 8 0.020 2.0000 0.6928 0.4024 3.5976

Equal Variance not Assumed

2.887 6,817 0.024 2.0000 0.6928 0.3528 3.6472

Page 25: Reporting an independent sample t test

Reporting Results using APA• Now we’ll finish up by filling in the values related to the T-

Test. Here we enter the degrees of freedom (df), the t-value (t), and the Sig. (2-tailed) value (often referred to as the p value).

“There was a significant difference in the scores for country music listening (M=4.2, SD=1.3) and no

country music listening (M=2.2, SD=0.84) Conditions; t(8)=2.89, p=0.02.”

Levene’s Test for quality of Variances T-test for Equality of Means

F Sig t dfSig.

(2-tailes)Mean

DifferenceStd. Error Difference

95% Confidence Interval of the

Difference

Lower Upper

DVWORD Equal Variance Assumed

1.493 0.257 2.887 8 0.020 2.0000 0.6928 0.4024 3.5976

Equal Variance not Assumed

2.887 6,817 0.024 2.0000 0.6928 0.3528 3.6472

Page 26: Reporting an independent sample t test

Once the blanks are full…

Page 27: Reporting an independent sample t test

Once the blanks are full…

• You have a sentence that looks very scientific but was actually very simple to produce.

Page 28: Reporting an independent sample t test

Once the blanks are full…

• You have a sentence that looks very scientific but was actually very simple to produce.

“There was a significant difference in trucker drowsiness scores for country music listening (M=4.2, SD=1.3) and non-county music listening (M=2.2, SD=0.84) conditions; t (8)=2.89, p = 0.02.”