Try out our new practice tests completely free!

Discovering Statistics

Statistics

Bookmark

Quiz 6 : The Beast of Bias

What does the central limit theorem state?
Free
Multiple Choice

A

Which of the following equations best reflects a linear model?
Free
Multiple Choice

A

Calculate the z-score for the skewness of the resting heart rate data.
Free
Multiple Choice

A

Which individual has had their stature expressed in centimetres as opposed to metres?
Multiple Choice
What assumption can be made regarding the distribution of the heart rate data?
Multiple Choice
What is the correct expression for the Kolmogorov-Smirnov test for the systolic blood pressure data of the rugby players?
Multiple Choice
What assumption can be made regarding the distribution of the age data?
Multiple Choice
Calculate the z-score for the kurtosis of the resting heart rate data.
Multiple Choice
Calculate the z-score for the skewness of the resting heart rate data.
Multiple Choice
Sources of bias can be reduced if which of the following assumptions are met?
Multiple Choice
Plot resting diastolic blood pressure as a histogram. You should get the histogram below. How would you describe its appearance?
Multiple Choice
Split the data according to the sport. Run a Kolmogorov-Smirnov test on the diastolic blood pressure data. Which group's data cannot assume a normal distribution?
Multiple Choice
Ignoring the sport played, run a Kolmogorov-Smirnov test on the age variable. What is the correct expression for the result?
Multiple Choice
The z-score for the kurtosis or skewness of a data set can be considered significant if it falls between which range?
Multiple Choice
What does Levene's test do?
Multiple Choice
What does the X in Q1 refer to?
Multiple Choice