Results

Descriptives

Zeppo老師統計課的心理系學生成績描述統計

Descriptives
		x
N		20
Mean		72.3
Median		75.0
Standard deviation		9.52
Minimum		50
Maximum		89

Plots

x

One Sample T-Test: DV is continuous data

One Sample T-Test
						95% Confidence Interval
		Statistic	df	p	Mean difference	Lower	Upper		Effect Size
x	Student's t	2.25	19.0	0.036	4.80	0.344	9.26	Cohen's d	0.504
Note. Hₐ μ ≠ 67.5

Normality Test (Shapiro-Wilk)
	W	p
x	0.962	0.586
Note. A low p-value suggests a violation of the assumption of normality

Q-Q plots

Linear Regression: DV is continuous data

Model Coefficients - d_score
			95% Confidence Interval
Predictor	Estimate	SE	Lower	Upper	t	p
Intercept	4.80	2.13	0.344	9.26	2.25	0.036
Intercept	NaN	NaN	NaN	NaN	NaN	NaN
Note. Linear model contains aliased coefficients (singular fit)

Assumption Checks

Normality Test (Shapiro-Wilk)
Statistic		p
0.962		0.586

Q-Q Plot

One Sample T-Test: DV is ranked data

One Sample T-Test
		Statistic	p
x	Wilcoxon W	210	< .001
Note. Hₐ μ ≠ 0

One Sample T-Test: DV is ranked data

One Sample T-Test
		Statistic	df	p
d_rank	Student's t	2.25	19.0	0.036
Note. Hₐ μ ≠ 0

Linear Regression: DV is ranked data

Model Coefficients - d_rank
Predictor	Estimate	SE	t	p
Intercept	4.80	2.13	2.25	0.036
Intercept	NaN	NaN	NaN	NaN
Note. Linear model contains aliased coefficients (singular fit)

References

[1] The jamovi project (2022). jamovi. (Version 2.3) [Computer Software]. Retrieved from https://www.jamovi.org.

[2] R Core Team (2021). R: A Language and environment for statistical computing. (Version 4.1) [Computer software]. Retrieved from https://cran.r-project.org. (R packages retrieved from MRAN snapshot 2022-01-01).