Pie charts (Edexcel GCSE Statistics): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
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Practise the cards
10 cards from this deck
How do you calculate the angle for a data category?
How do you calculate the angle for a data category?
Use angle = (value/total) × 360°
Why must all sector angles sum to 360° in a pie chart?
Why must all sector angles sum to 360° in a pie chart?
Because a circle's total angle is 360°
How do you verify your pie chart is accurate?
How do you verify your pie chart is accurate?
Add all angles; they should total 360°
Given data: 60, 30, 10 out of 100, find the first sector angle.
Given data: 60, 30, 10 out of 100, find the first sector angle.
(60/100) × 360° = 216°
Calculate the angles for segments with values 50, 30, 20 total 100.
Calculate the angles for segments with values 50, 30, 20 total 100.
50° , 108°, 72° (using (value/total) × 360°)
What common mistake should you avoid when summing sector angles?
What common mistake should you avoid when summing sector angles?
Forget to ensure the total sums to 360°
What does the formula angle = (value/total)×360° help you do?
What does the formula angle = (value/total)×360° help you do?
Calculate each sector's angle proportionally
Why is labeling sectors important in pie charts?
Why is labeling sectors important in pie charts?
Clarifies what each sector represents
What is a key principle behind pie charts?
What is a key principle behind pie charts?
Slices are proportional to data values
Calculate the sector angle for 42 of 180 flats
Calculate the sector angle for 42 of 180 flats
84° (42/180 × 360 = 84°)