Vergelijkingsmethoden

Leren

Technieken om waarden te vergelijken: verschillen, totalen en relatieve groottes vinden.

Comparing data involves several methods: finding the difference (subtraction), computing totals (addition), identifying maximum and minimum values, and calculating ratios or percentages. The comparison method depends on the question—'how much more' asks for difference, 'how many times' asks for ratio, 'altogether' asks for total.

difference = larger - smaller; total = sum of all; ratio = A/B

• Difference: Max value 80, Min value 30 → Difference = 50
• Total: Values 20, 30, 40, 50 → Total = 140
• Which is higher: Compare bar heights or values directly

Zo herkent u het

• 'How much more/less' → calculate difference
• 'What is the total' → add all values
• 'Which is greater' → direct comparison
• 'Range' → max minus min

Veelgemaakte fouten

• Subtracting in wrong order (gives negative difference)
• Missing values when calculating totals
• Comparing without reading exact values first

Oefenadvies

Data-interpretatie