Quiz on Statistical Bias

What can result from many different sources in statistical studies?

• Random sampling

• Statistical bias

• Data accuracy

• Sample size

Which category of statistical bias involves the method of selecting samples?

• Biased statistic

• Random error

• Biased sampling method

• Systematic error

What is the effect of a poor sampling method in statistical studies?

• High variability

• Low variability

• Accurate results

• Diverse data

What does the age sample in the image represent?

• High variability with no statistical bias

• Low variability with statistical bias

• High variability with statistical bias

• Low variability with no statistical bias

What is natural variability?

• Variability caused by human intervention

• Variability that occurs with no human intervention or error

• Variability influenced by new instructional techniques

• Variability that is always constant

Which of the following is an example of natural variability?

• Test grades influenced by study patterns

• Temperatures varying from hour to hour

• Strength varying due to exercise

• Grades changing due to new teaching methods

Which of the following is NOT an example of natural variability?

• Strength varying from person to person

• Grades on a test varying due to different study patterns

• Temperatures varying from day to day

• Strength varying due to location