PHC62804 Tutorial 2

What is the type of data usually analysed by parametric statistical analysis?

• Binomial data
• Continous data
• Nominal dat

Which of the following best describes beta (β)?

• The degree of statistical significance between 2 treatment groups.
• The degree of clinical significance between 2 treatment groups.
• The chance of making the Type 1 error.
• The chance of making the Type II error.

The reduction in Beta (β) will likely result in what type of change to the sample size?

• No change
• Beta is not associated with sample size
• It will increase the sample size
• It will reduce the sample size

Which of the following provides the best interpretation of a p = 0.001?

• 99.9% chance that the results of a study are clinically significant
• 99.9% chance that the results of this study are due to chance.
• 0.1% chance that the results of a study are due to random error
• 0.1% chance that the results of a study are clinically significant

The stages of a malignant disease (cancer) are recorded using the symbols 0, I, II, III, and IV. Thus the stages is a

• Ratio variable
• Numerical variable
• Ordinal variable
• Interval variable

If a series of values consists of 21 numbers, then, for finding the median, we ordered the series ascending and we use:

• The 11th value in the ordered series
• The mean between the 10th and 11th values
• The mean between the 11th and 12th values
• The 10th value in the ordered series

In which of the following cases could you use a paired-samples t-test?

• When assessing three groups or more
• When assessing goodness of fit
• When comparing men and women's scores
• When comparing the same participants performance before and after training

Analysis of variance is a statistical method of comparing the ________ of several populations.

• standard deviations
• variances
• means
• proportions