Data Analysis.
Essay by Yusra Jamil (F-Name Jamil Ahmed) • March 21, 2019 • Research Paper • 416 Words (2 Pages) • 1,090 Views
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Data Analysis
- Normality
Descriptive Statistics | |||||||||
N | Minimum | Maximum | Mean | Std. Deviation | Skewness | Kurtosis | |||
Statistic | Statistic | Statistic | Statistic | Statistic | Statistic | Std. Error | Statistic | Std. Error | |
Usefulness | 250 | 1.00 | 11.83 | 3.5113 | .82315 | 4.042 | .154 | 41.288 | .307 |
Easeofuse | 250 | 1.00 | 8.17 | 3.6813 | .66934 | .714 | .154 | 8.975 | .307 |
Observability | 250 | 2.00 | 5.00 | 3.7180 | .71239 | -.004 | .154 | -.369 | .307 |
Attitude | 250 | 1.75 | 14.00 | 3.8140 | .97787 | 4.451 | .154 | 46.239 | .307 |
Intention | 250 | 1.50 | 5.00 | 3.8230 | .68101 | -.221 | .154 | -.030 | .307 |
Valid N (listwise) | 250 |
According to Coakes and Steed, (2001) the data is considered good when it has a normal distribution, with no presence of noticeable skewness, and bell-shaped. The data is considered normally distributed when the skewness and kurtosis value falls between -2 and +2 (Chua, 2006b). If the skewness values fall outside the range of -1 to +1 then this indicates a substantially skewed distribution (Hair et al, 2010).
- Multicollinearity
Two methods of assessment
A. Correlations (Chatterjee & Yilmaz, 1992; Peng & Lai, 2012)
B. VIF (Hair et al., 2011)
Correlations | ||||||
Usefulness | Easeofuse | Observability | Attitude | Intention | ||
Usefulness | Pearson Correlation | 1 | .321** | .233** | .232** | .306** |
Sig. (1-tailed) | .000 | .000 | .000 | .000 | ||
N | 250 | 250 | 250 | 250 | 250 | |
Easeofuse | Pearson Correlation | .321** | 1 | .386** | .345** | .410** |
Sig. (1-tailed) | .000 | .000 | .000 | .000 | ||
N | 250 | 250 | 250 | 250 | 250 | |
Observability | Pearson Correlation | .233** | .386** | 1 | .367** | .458** |
Sig. (1-tailed) | .000 | .000 | .000 | .000 | ||
N | 250 | 250 | 250 | 250 | 250 | |
Attitude | Pearson Correlation | .232** | .345** | .367** | 1 | .558** |
Sig. (1-tailed) | .000 | .000 | .000 | .000 | ||
N | 250 | 250 | 250 | 250 | 250 | |
Intention | Pearson Correlation | .306** | .410** | .458** | .558** | 1 |
Sig. (1-tailed) | .000 | .000 | .000 | .000 | ||
N | 250 | 250 | 250 | 250 | 250 | |
**. Correlation is significant at the 0.01 level (1-tailed). |
Hair et al (2010) correlation coefficient of 0.90 and above indicates the existence of multicollinearity between the exogenous latent constructs
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