Formulate statistical questions that anticipate variability, distinguish categorical from numerical data and discrete from continuous data, and select appropriate data-collection methods, including a census, representative sample survey, observational study, or experiment. Calculate and interpret the mean, median, mode, and range for ungrouped data, select an appropriate measure of centre based on distribution and extreme values, and recognize biased survey wording and answer choices. Construct and interpret circle graphs using category frequencies, fractions, percentages, and central angles totaling , and identify misleading scales, intervals, labels, units, boundaries, category choices, or visual dimensions in data displays.
On this page:
Master 9 individual skills with free practice problems. Mouseover to see the skill's practice problems. Create a free account to track your progress.
Select any skill in this group by hovering over the list above. Unlimited free practice problems, automatically graded.
Hover a skill above to start practicing.
Print this free 'Data Analysis' worksheet to practice these skills away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
These adaptive units introduce, teach, or reinforce skills in this group (Data Analysis) through scaffolded problems that grow in difficulty as concepts are understood.