Year 11
Foundation

Calculate experimental probabilities and make predictions (relative frequency)

Year 11
Foundation

Calculate experimental probabilities and make predictions (relative frequency)

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Lesson details

Key learning points

  1. In this lesson, we will learn how to record data in a relative frequency table and use the probabilities to make predictions, including scenarios such as spinners or rolling dice.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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3 Questions

Q1.
A dice is rolled and a fair coin is tossed. Use the table to find the probability of getting an odd number and a tail.
An image in a quiz
A
Correct answer: B
C
Q2.
Students in year 7 were asked how they travelled to school. Work out the probability a student who travels by bus is selected.
An image in a quiz
Correct answer: A
B
C
Q3.
Students in year 7 were asked how they travelled to school. Work out the probability of selecting a girl who doesn’t walk is selected.
An image in a quiz
A
B
Correct answer: C

3 Questions

Q1.
Marion rolls a dice thirty times and records the information in a relative frequency table. How could she make her experiment more reliable?
Repeat the experiment and compare her results to the first experiment
Roll the dice 10 times and record her results
Correct answer: Roll the dice 600 times and record her results
Use theoretical probabilities
Q2.
An image in a quiz
Correct answer: A
B
C
D
Q3.
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?
An image in a quiz
A and D occurred the same number of times.
B occurred the most frequently.
Correct answer: C occurred 15 times.
It is difficult to say whether the spinner is biased because there have only been 20 trials.