Answer the following questions in your own words:
To test the reliability of the HESI Exam before administration, a Kuder Richardson Formula 20 was used. This formula can only be applied to dichotomously scored data, meaning the response to an item or task is always scored as either correct or incorrect. Test for validity is an ongoing process. Content validity refers to the test items' effectiveness in measuring students' basic nursing knowledge and skills.
Descriptives
Descriptive Statistics 


N 
Minimum 
Maximum 
Mean 
Std. Deviation 
Version 1 HESI 
35 
58.22 
99.42 
79.1243 
10.83923 
At Least 75% of HESI Packet Completed 
33 
.00 
1.00 
.3636 
.48850 
Version 2 HESI 
35 
55.43 
94.12 
78.4066 
11.06854 
Gender 
35 
1.00 
2.00 
1.9143 
.28403 
Valid N (listwise) 
33 




The mean for remediation completion was .36 and the standard deviation was .49. After completing the remediation, the mean for the final exam hesi score was 78.0 with a standard deviation of 11.2.
T value is 40.764 and df is 32.
TTest
Paired Samples Statistics 


Mean 
N 
Std. Deviation 
Std. Error Mean 

Pair 1 
At Least 75% of HESI Packet Completed 
.3636 
33 
.48850 
.08504 
Version 2 HESI 
78.0088 
33 
11.15226 
1.94136 
Paired Samples Correlations 


N 
Correlation 
Significance 

OneSided p 
TwoSided p 

Pair 1 
At Least 75% of HESI Packet Completed & Version 2 HESI 
33 
.448 
.004 
.009 
Paired Samples Test 


Paired Differences 
t 
df 
Significance 


Mean 
Std. Deviation 
Std. Error Mean 
95% Confidence Interval of the Difference 
OneSided p 
TwoSided p 


Lower 
Upper 


Pair 1 
At Least 75% of HESI Packet Completed  Version 2 HESI 
77.64515 
10.94192 
1.90474 
81.52499 
73.76531 
40.764 
32 
<.001 
<.001 

Paired Samples Effect Sizes 


Standardizer^{a} 
Point Estimate 
95% Confidence Interval 

Lower 
Upper 

Pair 1 
At Least 75% of HESI Packet Completed  Version 2 HESI 
Cohen's d 
10.94192 
7.096 
8.855 
5.329 
Hedges' correction 
11.20700 
6.928 
8.646 
5.203 

a. The denominator used in estimating the effect sizes. Cohen's d uses the sample standard deviation of the mean difference. Hedges' correction uses the sample standard deviation of the mean difference, plus a correction factor. 
TTest
Paired Samples Statistics 


Mean 
N 
Std. Deviation 
Std. Error Mean 

Pair 1 
Version 1 HESI 
79.1243 
35 
10.83923 
1.83216 
Version 2 HESI 
78.4066 
35 
11.06854 
1.87093 
Paired Samples Correlations 


N 
Correlation 
Significance 

OneSided p 
TwoSided p 

Pair 1 
Version 1 HESI & Version 2 HESI 
35 
.380 
.012 
.024 
Paired Samples Test 


Paired Differences 
t 
df 
Significance 

Mean 
Std. Deviation 
Std. Error Mean 
95% Confidence Interval of the Difference 
OneSided p 
TwoSided p 

Lower 
Upper 

Pair 1 
Version 1 HESI  Version 2 HESI 
.71771 
12.19945 
2.06208 
3.47294 
4.90837 
.348 
34 
.365 
.730 
Paired Samples Effect Sizes 


Standardizer^{a} 
Point Estimate 
95% Confidence Interval 

Lower 
Upper 

Pair 1 
Version 1 HESI  Version 2 HESI 
Cohen's d 
12.19945 
.059 
.273 
.390 
Hedges' correction 
12.47706 
.058 
.267 
.381 

a. The denominator used in estimating the effect sizes. Cohen's d uses the sample standard deviation of the mean difference. Hedges' correction uses the sample standard deviation of the mean difference, plus a correction factor. 
Explore
Case Processing Summary 


Cases 

Valid 
Missing 
Total 

N 
Percent 
N 
Percent 
N 
Percent 

Version 1 HESI 
35 
100.0% 
0 
0.0% 
35 
100.0% 
Version 2 HESI 
35 
100.0% 
0 
0.0% 
35 
100.0% 
Version 1 HESI
Version 1 HESI StemandLeaf Plot
Frequency Stem & Leaf
1.00 5 . 8
3.00 6 . 344
5.00 6 . 56888
3.00 7 . 133
7.00 7 . 5677889
6.00 8 . 001122
3.00 8 . 799
4.00 9 . 1122
3.00 9 . 789
Stem width: 10.00
Each leaf: 1 case(s)
Version 2 HESI
Version 2 HESI StemandLeaf Plot
Frequency Stem & Leaf
3.00 5 . 589
3.00 6 . 033
2.00 6 . 58
3.00 7 . 333
7.00 7 . 5567889
6.00 8 . 002233
4.00 8 . 5569
7.00 9 . 0012334
Stem width: 10.00
Each leaf: 1 case(s)
TTest
Group Statistics 


Gender 
N 
Mean 
Std. Deviation 
Std. Error Mean 
Version 2 HESI 
Male 
3 
83.7133 
4.97826 
2.87420 
Female 
32 
77.9091 
11.39250 
2.01393 
Independent Samples Test 


Levene's Test for Equality of Variances 
ttest for Equality of Means 

F 
Sig. 
t 
df 
Significance 
Mean Difference 
Std. Error Difference 
95% Confidence Interval of the Difference 

OneSided p 
TwoSided p 
Lower 
Upper 

Version 2 HESI 
Equal variances assumed 
2.188 
.149 
.865 
33 
.197 
.393 
5.80427 
6.70811 
7.84348 
19.45202 
Equal variances not assumed 


1.654 
4.378 
.084 
.167 
5.80427 
3.50955 
3.61688 
15.22542 
Independent Samples Effect Sizes 


Standardizer^{a} 
Point Estimate 
95% Confidence Interval 

Lower 
Upper 

Version 2 HESI 
Cohen's d 
11.10968 
.522 
.672 
1.709 
Hedges' correction 
11.37041 
.510 
.656 
1.669 

Glass's delta 
11.39250 
.509 
.685 
1.696 

a. The denominator used in estimating the effect sizes. Cohen's d uses the pooled standard deviation. Hedges' correction uses the pooled standard deviation, plus a correction factor. Glass's delta uses the sample standard deviation of the control (i.e., the second) group. 
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