Comparing Statistical Diagrams Flashcards

All 6 cards in this deck

Can you compare the actual numbers in two pie charts drawn from different data sets?

Not unless you know the total frequency for each — pie charts show proportions only.

True or false? If a sector for French is bigger in one pie chart than in another, more people chose French in that group.

False.
The sector only shows a larger proportion; without both totals you cannot compare the actual numbers.

What extra information do you need to compare frequencies from two pie charts?

The total frequency each pie chart is based on.

Which diagram is appropriate for showing data collected over time?

A line graph (time series graph).

Which diagrams are appropriate for categorical data?

Bar charts, pictograms and pie charts.

What is a pie chart best for showing?

The proportion each category makes of the whole.