Using arrays for two step experiments| Year 9 Maths | MaffsGuru.com

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This is the next video looking at Probability for the Year 9 course and deals with Using arrays for two-step experiments. Whilst we can list all the outcomes from an experiment in a sample space, it's not the most user friendly way of showing the outcomes. This lesson looks at how we can be more visual in the display of the outcomes when we have two-step experiments. What is a two-step experiment? Well, watch the video and all will be revealed. There are lots of worked examples (provided by Cambridge series of textbooks) and the theory is explained in an easy to understand way.

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00:00 - Start
00:07 - Welcome!
00:50 - Learning objectives
01:06 - Recap of past learning
01:43 - What is a two-step experiment
02:32 - Throwing a coin and listing the outcomes
04:31 - Throwing a coin with a table (or array)
06:26 - With or without replacement
07:45 - Example: CAT with replacement
08:51 - Example: CAT without replacement
10:04 - Example 1
12:02 - Example 2
15:17 - Final words