Question

For the table below, fill in the missing sections for the Mean, Median, Mode, Range, and Standard

Deviation on your own. Remember to round to two decimal places.

Hint: Put it in SPSS to simplify the

calculation of the standard deviation, using the “Means” test under the Analyze menu!

Then complete

the five questions and transfer your answers to the quiz in Canvas

Condition 1 Scores

Condition 2 Scores

1

5

1

7

2

6

3

5

2

5

2

8

4

7

2

4

2

5

10

6

2

2

3

4

Column Mean

Column Median

Column Mode

Standard Deviation

Column Range

1. The correct mean for Condition One is _______ while the correct mean for Condition Two is ______:

A. 5.00 and 2.00

B. 2.00 and 5.00

C. 2.39 and 1.36

D. 5.25 and 2.50

E. 2.83 and 5.33

2. The correct standard deviation for Condition One is ________ while the correct standard deviation for

Condition Two is _______

A. 2.22 and 3.23

B. 1.36 and 2.39

C. 2.41 and 1.61

D. 2.39 and 2.50

E. 1.36 and 2.39

3. Which of the following is true about the range?

A. Condition One has a larger range than Condition Two

B. Condition Two has a larger range than Condition One

C. Condition One has the same range as Condition Two

D. It is impossible to determine which range is higher or lower for this data set

3. Imagine you ran a

t

-Test on this data to see if Condition One differs significantly from Condition

Two. You got the following Independent Samples Test table:

4. What is the best interpretation for this

t

-Test?

A. It was significant,

t

(2.99) = 22,

p

= .007

B. It was significant,

t

(22) = 2.99,

p

= .007

C. It was significant,

t

(19.24) = 2.99,

p

= .07

D. It was not significant,

t

(22) = 19.24,

p

= .05

E. It was not significant,

t

(22) = 0.13,

p

= .720

5. Using the Independent Samples Test table and your findings for the mean and SDs to fully interpret

the independent samples t-Test, which of the following is correct? Note that unlike Question 4, the p

value here uses < or > rather than =. Also, you’ll need to find the means and SDs in using the original

table above Question #1

A. We ran an independent samples

t

-Test with score as the dependent variable and condition (1

versus 2) as the independent variable, which was significant,

t

(22) = 2.99,

p

< .01. Scores were

lower in condition 1 (

M

= 2.83,

SD

= 2.41) than in condition 2 (

M

= 5.33,

SD

= 1.61).

B. We ran an independent samples

t

-Test with score as the dependent variable and condition (1

versus 2) as the independent variable, which was not significant,

t

(22) = 2.99,

p

> .05. Scores

were lower in condition 1 (

M

= 2.83,

SD

= 2.41) than in condition 2 (

M

= 5.33,

SD

= 1.61).

C. We ran an independent samples

t

-Test with score as the dependent variable and condition (1

versus 2) as the independent variable, which was significant,

t

(19.24) = 2.99,

p

< .001. Scores

were lower in condition 1 (

M

= 2.83,

SD

= 2.41) than in condition 2 (

M

= 5.33,

SD

= 1.61).

D. We ran an independent samples

t

-Test with score as the dependent variable and condition (1

versus 2) as the independent variable, which was significant,

t

(22) = 0.13,

p

< .05. Scores were

lower in condition 1 (

M

= 2.83,

SD

= 2.41) than in condition 2 (

M

= 5.33,

SD

= 1.61).

E. We ran an independent samples

t

-Test with score as the dependent variable and condition (1

versus 2) as the independent variable, which was significant,

t

(22) = 2.99,

p

< .01. Scores were

lower in condition 1 (

M

= 5.33,

SD

= 1.61) than in condition 2 (

M

= 2.83,

SD

= 2.41).

Answer 1

2.83 and 5.33

2. C. 2.41 and 1.61

3. Range of condition 1 = 9

Range of condition 2 = 6

  A. Condition One has a larger range than Condition Two

--------------------------------------------------------------------------

t-Test: Two-Sample Assuming Equal Variances
	Score1	Score2
Mean	2.83	5.33
Variance	5.79	2.61
Observations	12.00	12.00
Pooled Variance	4.20
Hypothesized Mean Difference	0.00
df	22.00
t Stat	-2.99
P(T<=t) one-tail	0.00
t Critical one-tail	1.72
P(T<=t) two-tail	0.007
t Critical two-tail	2.07

4 B. (for details, please refer the image)