# Predicting percentages Percentages are good ways of comparing

Predicting percentages Percentages are good ways of comparing groups within a population. They are always out of 100, so 100% would mean the whole amount. To work out what percentage you have of something: For example, if in a class of 30 pupils, 12 liked bananas: Percentage that like bananas = = 40 % Whose prediction was closest? If you have time repeat the Predict: What percentage of your form are Manchester United fans? HINT If you think more than half are MU fans, predict higher than 50%. If you think almost everyone is a MU fan, predict close to 100%. If you think hardly anyone is a MU fan, predict close to 0%. Now ask your form and calculate the percentage Predicting percentages Percentages are good ways of comparing groups within a population.

They are always out of 100, so 100% would mean the whole amount. To work out what percentage you have of something: For example, if in a class of 30 pupils, 12 liked bananas: Percentage that like bananas = = 40 % Whose prediction was closest? If you have time repeat the Predict: What percentage of your form have a dog? HINT If you think more than half have dogs, predict higher than 50%. If you think almost everyone has a dog, predict close to 100%. If you think hardly anyone has a dog, predict close to 0%. Now ask your form and calculate the percentage Predicting percentages Percentages are good ways of comparing groups within a population. They are always out of 100, so 100% would mean the whole amount. To work out what percentage you have of something:

For example, if in a class of 30 pupils, 12 liked bananas: Percentage that like bananas = = 40 % Whose prediction was closest? If you have time repeat the Predict: What percentage of your form like marmite? HINT If you think more than half like marmite, predict higher than 50%. If you think almost everyone likes marmite, predict close to 100%. If you think hardly anyone likes marmite, predict close to 0%. Now ask your form and calculate the percentage Predicting percentages Percentages are good ways of comparing groups within a population. They are always out of 100, so 100% would mean the whole amount. To work out what percentage you have of something: Predict:

For example, if in a class of 30 pupils, 12 liked bananas: Miss Yordanova likes a good dab just saying Now ask HINT your form If you think more than and half like to dab, predict calculate the higher than 50%. percentage If you think almost Percentage that like bananas = = 40 % Whose prediction was closest? If you have time repeat the process for other strange What percentage of your form like to dab? everyone likes to dab, predict close to 100%. If you think hardly anyone likes to dab, predict close to 0%. Predicting percentages Percentages are good ways of comparing groups within a population. They are always out of 100, so 100% would mean the whole amount. To work out what percentage you have of something:

Predict: For example, if in a class of 30 pupils, 12 liked bananas: Miss Willis can bottle flip - fact Percentage that like bananas = = 40 % Whose prediction was closest? If you have time repeat the process for other talents. What percentage of your form can bottle flip? HINT If you think more than half can bottle flip, predict higher than 50%. If you think almost everyone can bottle flip, predict close to 100%. If you think hardly anyone can bottle flip, predict close to 0%. Now ask your form and calculate the percentage

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