Number, Proportion & Ratio Flashcards

All 4 cards in this deck

How many square metres are there in 1 square kilometre?

1 000 000 m² (1000 m × 1000 m).

What is the formula for working out what percentage a part is of a total?

percentage = (part ÷ total) × 100

What is the difference between the magnitude and the frequency of an event?

Magnitude is its size or strength; frequency is how often it happens.

Give one reason why the total score from an environmental quality survey may be an unreliable basis for a conclusion.

All categories are given equal weighting, although some matter more than others for quality.