Question: Explain your overall observations about the correlations and the signi
ID: 3246927 • Letter: Q
Question
Question: Explain your overall observations about the correlations and the significance levels when you conducted one tail vs. two tail tests using APA style.
DATA:
A Pearson’s correlation between Computer (Literacy) and Test (% on SPSS test).
Correlations
Computer literacy
Percentage on SPSS test
Computer literacy
Pearson Correlation
1
.064
Sig. (2-tailed)
.526
N
100
100
Percentage on SPSS test
Pearson Correlation
.064
1
Sig. (2-tailed)
.526
N
100
100
A Partial correlation on the same two variables with Lecture (Attendance) controlled.
Partial Correlations
Control Variables
Computer literacy
Percentage on SPSS test
Percentage of lectures attended
Computer literacy
Correlation
1.000
.078
Significance (2-tailed)
.
.445
df
0
97
Percentage on SPSS test
Correlation
.078
1.000
Significance (2-tailed)
.445
.
df
97
0
A Point Bi-serial correlation between Test (% SPSS test) and University.
Point Bi-serial Correlations
Percentage on SPSS test
University
Percentage on SPSS test
Pearson Correlation
1
.845**
Sig. (2-tailed)
.000
N
100
100
University
Pearson Correlation
.845**
1
Sig. (2-tailed)
.000
N
100
100
**. Correlation is significant at the 0.01 level (2-tailed).
Re-calculate the correlation between Computer (Literacy) and Test (% on SPSS test) as a Spearman’s rho and a Kendell’s tau.
Correlations
Computer literacy
Percentage on SPSS test
Kendall's tau_b
Computer literacy
Correlation Coefficient
1.000
.083
Sig. (2-tailed)
.
.231
N
100
100
Percentage on SPSS test
Correlation Coefficient
.083
1.000
Sig. (2-tailed)
.231
.
N
100
100
Spearman's rho
Computer literacy
Correlation Coefficient
1.000
.113
Sig. (2-tailed)
.
.264
N
100
100
Percentage on SPSS test
Correlation Coefficient
.113
1.000
Sig. (2-tailed)
.264
.
N
100
100
Using SPSS, conduct the same correlation calculations as one tail tests.
Correlations
Computer literacy
Percentage on SPSS test
Computer literacy
Pearson Correlation
1
.064
Sig. (1-tailed)
.263
N
100
100
Percentage on SPSS test
Pearson Correlation
.064
1
Sig. (1-tailed)
.263
N
100
100
Partial Correlations
Control Variables
Computer literacy
Percentage on SPSS test
Percentage of lectures attended
Computer literacy
Correlation
1.000
.078
Significance (1-tailed)
.
.223
df
0
97
Percentage on SPSS test
Correlation
.078
1.000
Significance (1-tailed)
.223
.
df
97
0
Point Bi-serial Correlations
Correlations
Percentage on SPSS test
University
Percentage on SPSS test
Pearson Correlation
1
.845**
Sig. (1-tailed)
.000
N
100
100
University
Pearson Correlation
.845**
1
Sig. (1-tailed)
.000
N
100
100
**. Correlation is significant at the 0.01 level (1-tailed).
Correlations
Computer literacy
Percentage on SPSS test
Kendall's tau_b
Computer literacy
Correlation Coefficient
1.000
.083
Sig. (1-tailed)
.
.116
N
100
100
Percentage on SPSS test
Correlation Coefficient
.083
1.000
Sig. (1-tailed)
.116
.
N
100
100
Spearman's rho
Computer literacy
Correlation Coefficient
1.000
.113
Sig. (1-tailed)
.
.132
N
100
100
Percentage on SPSS test
Correlation Coefficient
.113
1.000
Sig. (1-tailed)
.132
.
N
100
100
Correlations
Computer literacy
Percentage on SPSS test
Computer literacy
Pearson Correlation
1
.064
Sig. (2-tailed)
.526
N
100
100
Percentage on SPSS test
Pearson Correlation
.064
1
Sig. (2-tailed)
.526
N
100
100
Explanation / Answer
Correlations
Computer literacy
Percentage on SPSS test
Computer literacy
Pearson Correlation
1
.064
Sig. (2-tailed)
.526
N
100
100
Percentage on SPSS test
Pearson Correlation
.064
1
Sig. (2-tailed)
.526
N
100
100
Here, the signicance of Computer Literacy and Percentage on SPSS Test is no significant as the significance value is 0.546 which is greater than 0.05
A Partial correlation on the same two variables with Lecture (Attendance) controlled.
Partial Correlations
Control Variables
Computer literacy
Percentage on SPSS test
Percentage of lectures attended
Computer literacy
Correlation
1.000
.078
Significance (2-tailed)
.
.445
df
0
97
Percentage on SPSS test
Correlation
.078
1.000
Significance (2-tailed)
.445
.
df
97
0
Partial correlation between the two varaibles is also not significant because the significance value is 0.445 which is greater than 0.05
A Point Bi-serial correlation between Test (% SPSS test) and University.
Point Bi-serial Correlations
Percentage on SPSS test
University
Percentage on SPSS test
Pearson Correlation
1
.845**
Sig. (2-tailed)
.000
N
100
100
University
Pearson Correlation
.845**
1
Sig. (2-tailed)
.000
N
100
100
**. Correlation is significant at the 0.01 level (2-tailed).
Point Bi correlation between the two variables is significant because the significance value 0.00 is less than 0.05.
Re-calculate the correlation between Computer (Literacy) and Test (% on SPSS test) as a Spearman’s rho and a Kendell’s tau.
Correlations
Computer literacy
Percentage on SPSS test
Kendall's tau_b
Computer literacy
Correlation Coefficient
1.000
.083
Sig. (2-tailed)
.
.231
N
100
100
Percentage on SPSS test
Correlation Coefficient
.083
1.000
Sig. (2-tailed)
.231
.
N
100
100
Spearman's rho
Computer literacy
Correlation Coefficient
1.000
.113
Sig. (2-tailed)
.
.264
N
100
100
Percentage on SPSS test
Correlation Coefficient
.113
1.000
Sig. (2-tailed)
.264
.
N
100
100
the Kendell's tau correlation is not significant because the significance value 0.231 is greater than 0.05
The Spearman rho is also not significant because the significance value 0.264 is greater than 0.05
Using SPSS, conduct the same correlation calculations as one tail tests.
Correlations
Computer literacy
Percentage on SPSS test
Computer literacy
Pearson Correlation
1
.064
Sig. (1-tailed)
.263
N
100
100
Percentage on SPSS test
Pearson Correlation
.064
1
Sig. (1-tailed)
.263
N
100
100
One tailed correlation is also not significant because the significance 0.263 is greater than 0.05
Partial Correlations
Control Variables
Computer literacy
Percentage on SPSS test
Percentage of lectures attended
Computer literacy
Correlation
1.000
.078
Significance (1-tailed)
.
.223
df
0
97
Percentage on SPSS test
Correlation
.078
1.000
Significance (1-tailed)
.223
.
df
97
0
The partial one tailed correlation is also not significant because the significance level 0.223 is less than 0.05
Point Bi-serial Correlations
Correlations
Percentage on SPSS test
University
Percentage on SPSS test
Pearson Correlation
1
.845**
Sig. (1-tailed)
.000
N
100
100
University
Pearson Correlation
.845**
1
Sig. (1-tailed)
.000
N
100
100
**. Correlation is significant at the 0.01 level (1-tailed).
Point Bi correlation is significant because the significance 0.00 is less than 0.05
Correlations
Computer literacy
Percentage on SPSS test
Kendall's tau_b
Computer literacy
Correlation Coefficient
1.000
.083
Sig. (1-tailed)
.
.116
N
100
100
Percentage on SPSS test
Correlation Coefficient
.083
1.000
Sig. (1-tailed)
.116
.
N
100
100
Spearman's rho
Computer literacy
Correlation Coefficient
1.000
.113
Sig. (1-tailed)
.
.132
N
100
100
Percentage on SPSS test
Correlation Coefficient
.113
1.000
Sig. (1-tailed)
.132
.
N
100
100
Kendell's correlation is not significant because the significance 0.116 is greater than 0.05
Spearman's rho is also not significance because the siginficance 0.132 is greater than 0.05
Correlations
Computer literacy
Percentage on SPSS test
Computer literacy
Pearson Correlation
1
.064
Sig. (2-tailed)
.526
N
100
100
Percentage on SPSS test
Pearson Correlation
.064
1
Sig. (2-tailed)
.526
N
100
100
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