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Descriptives
Descriptive Statistics
N Minimum Maximum Mean Std. Deviation Skewness
Statistic Statistic Statistic Statistic Statistic Statistic
LS_Mean 400 1.20 5.00 3.5705 .73004 -.305 .122
IQ_Mean 400 1.40 5.00 3.6340 .70334 -.269 .122
TU_Mean 400 1.40 5.00 3.4800 .74255 -.157 .122
PI_Mean 400 1.50 5.00 3.2256 .76348 .027 .122
Valid N (listwise) 400
Descriptive Statistics
Skewness Kurtosis
Std. Error Statistic Std. Error
LS_Mean .122 -.235 .243
IQ_Mean .122 -.009 .243
TU_Mean .122 -.407 .243
PI_Mean .122 -.615 .243
Valid N (listwise)
Page 2- Descriptive Statistics (M, SD, Min, Max, Skewness, Kurtosis)
- Normality assessment via skewness and kurtosis
The variables were measured on a 5-point Likert scale ranging from 1 to 5. Descriptive statistics were computed for all four study variables. IQ_Mean obtained the highest mean score (M = 3.63, SD = 0.70), followed by LS_Mean (M = 3.57, SD = 0.73), TU_Mean (M = 3.48, SD = 0.74), and PI_Mean (M = 3.23, SD = 0.76), which recorded the lowest mean. Applying the interpretation thresholds for a 5-point scale (Low: 1.00–2.33; Moderate: 2.34–3.66; High: 3.67–5.00), all four variables fell within the moderate range.
Regarding the normality of the data, skewness values ranged from -0.305 (LS_Mean) to 0.027 (PI_Mean), and kurtosis values ranged from -0.615 (PI_Mean) to -0.009 (IQ_Mean). All skewness values were within the acceptable threshold of |Skew| < 2.0 (Gravetter & Wallnau, 2014), and all kurtosis values were within the acceptable threshold of |Kurt| < 7.0 (Byrne, 2010). These results indicated that the distributions of all variables approximated normality and were suitable for subsequent parametric analyses.
Table 1: Descriptive Statistics
| Variable | M | SD | Min | Max | Skew | Kurt | Level |
|---|---|---|---|---|---|---|---|
| IQ_Mean | 3.63 | 0.70 | 1.4 | 5.0 | -0.269 | -0.009 | Moderate |
| LS_Mean | 3.57 | 0.73 | 1.2 | 5.0 | -0.305 | -0.235 | Moderate |
| TU_Mean | 3.48 | 0.74 | 1.4 | 5.0 | -0.157 | -0.407 | Moderate |
| PI_Mean | 3.23 | 0.76 | 1.5 | 5.0 | 0.027 | -0.615 | Moderate |
Note. Variables are ordered from highest to lowest mean. Scale range: 1–5 (Low: 1.00–2.33; Moderate: 2.34–3.66; High: 3.67–5.00). All skewness and kurtosis values fall within acceptable thresholds (|Skew| < 2.0, Gravetter & Wallnau, 2014; |Kurt| < 7.0, Byrne, 2010), indicating approximate normality.
References
Byrne, B. M. (2010). Structural equation modeling with AMOS: Basic concepts, applications, and programming (2nd ed.). Routledge.
Gravetter, F. J., & Wallnau, L. B. (2014). Essentials of statistics for the behavioral sciences (8th ed.). Wadsworth.
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