Jade Huynh - 102111784 1
STA20006 Analysis of Variance and Regression – Assignment 1
Jade Huynh
102111784
Submitted as: Huynh_Jade_Assignment1
Due date: 16th April 2020 – 11:59PM
, Jade Huynh - 102111784 2
TASK A (16 marks)
The researchers of this study have hypothesised that people who spend more time sitting at
work are more likely to have more severe sleep problems. Use the data from the
Assignment1.sav data file to investigate this hypothesis. Write a brief report on your results,
including an appropriate hypothesis test. Include all relevant statistics and graphs, and
appendix the relevant output.
It was hypothesised that people who spend more time sitting at work are more likely
to have more severe sleep problems. In a random sample of 150 used cars, there was a strong
positive linear relationship between people who spend more time sitting at work and sleep
problems (see Figure 1) and Pearson’s correlation shows that this relationship is significant
r=0.73, n=150, p<0.001. The 95% confidence interval indicates the strength of the
relationship is between ρ=0.65 and ρ=0.80. In this sample, for each additional hour sat at
work, it will cause 3.26 hours of sleep problems. As expected, people who spend more time
sitting at work are more likely to have more severe sleep problems.
Figure 1. Scatterplot of hours sit at work and sleep problems
* Note: SPSS output / screenshots / etc. for this TASK can be found in Appendix A
STA20006 Analysis of Variance and Regression – Assignment 1
Jade Huynh
102111784
Submitted as: Huynh_Jade_Assignment1
Due date: 16th April 2020 – 11:59PM
, Jade Huynh - 102111784 2
TASK A (16 marks)
The researchers of this study have hypothesised that people who spend more time sitting at
work are more likely to have more severe sleep problems. Use the data from the
Assignment1.sav data file to investigate this hypothesis. Write a brief report on your results,
including an appropriate hypothesis test. Include all relevant statistics and graphs, and
appendix the relevant output.
It was hypothesised that people who spend more time sitting at work are more likely
to have more severe sleep problems. In a random sample of 150 used cars, there was a strong
positive linear relationship between people who spend more time sitting at work and sleep
problems (see Figure 1) and Pearson’s correlation shows that this relationship is significant
r=0.73, n=150, p<0.001. The 95% confidence interval indicates the strength of the
relationship is between ρ=0.65 and ρ=0.80. In this sample, for each additional hour sat at
work, it will cause 3.26 hours of sleep problems. As expected, people who spend more time
sitting at work are more likely to have more severe sleep problems.
Figure 1. Scatterplot of hours sit at work and sleep problems
* Note: SPSS output / screenshots / etc. for this TASK can be found in Appendix A
