Find probabilities from Venn diagrams including basic set notation

Maths

Probability 2 (Sample space, Venn diagrams and experimental)

Some children were asked if they owned a cat or a dog. A child is chosen at random. Calculate the probability that a child who owns a cat is chosen.

Some children were asked if they owned a cat or a dog. A child is chosen at random. Calculate the probability that a child who owns a dog or a cat is chosen.

This Venn diagram shows the number of students who study art, history and geography. Calculate P(not history).

Repeat the experiment and compare her results to the first experiment

Roll the dice 10 times and record her results

Roll the dice 600 times and record her results

Marion rolls a dice thirty times and records the information in a relative frequency table. How could she make her experiment more reliable?

A and D occurred the same number of times.

It is difficult to say whether the spinner is biased because there have only been 20 trials.

A spinner labelled A, B, C and D is spun 20 times. The relative frequencies are in the table below. Which statement is not true?

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