Group Statistics INSTRUCT N Mean Std Deviation Std Error Mea

Group Statistics

INSTRUCT

N

Mean

Std. Deviation

Std. Error Mean

FINAL

lecture

10

80.90

10.365

3.278

discussion

10

90.80

7.162

2.265

Independent Samples Test

Levene\'s Test for Equality of Variances

t-test for Equality of Means

F

Sig.

t

df

Sig. (2-tailed)

Mean Difference

Std. Error Difference

95% Confidence Interval of the Difference

Lower

Upper

FINAL

Equal variances assumed

1.695

.209

-2.485

18

.023

-9.900

3.984

-18.270

-1.530

Equal variances not assumed

-2.485

15.998

.024

-9.900

3.984

-18.346

-1.454

SPSS question:

Using the the above info, conduct an independent-samples t test to determine of the instruction type (lecture vs. discussion) had an effect on the final exam scores. Write up the results APA style. In your conclusion, if the difference is significant, indicate which instruction type helped the most – were the final exam scores higher under instruction type 1 or 2?

Group Statistics
	INSTRUCT	N	Mean	Std. Deviation	Std. Error Mean
FINAL	lecture	10	80.90	10.365	3.278
discussion	10	90.80	7.162	2.265

Solution