Capture Recapture - GCSE Higher Maths

A video explaining how to estimate a population using capture recapture. This topic is not part of the AQA GCSE course. It is part of Edexcel GCSE though and also AQA statistics.
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0:00 Intro
0:10 Topic Explanation
4:15 Example 1
5:15 Example 2
6:17 Example 3
7:41 Example 4
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[@girnogiovana6577]

This maths has truly been first class

[@top_g_university8]

what makes this channel special is the simple explanation and good quality teachings

[@keneddymarie8943]

you are honestly the best channel ever hopefully i acheive a grade 7 on my gcses❤

[@1stClassMaths]

I hope so too!

[@jojohn3865]

Thank you for doing these higher topics recently !

[@Goku_Black4444]

I love the way he explains his videos

[@1stClassMaths]

Very kind of you!

[@MFF-bm4zx]

can u do venn diagrams and transformations if not already, thanks for the great videos.

[@nickshales430]

💙

[@Matthew-ye3to]

Do indices please

[@1stClassMaths]

I have some indices videos already but will be doing a couple more.

[@user-es1pk4og1z]

just had a question what do I do if the total amount is a recurring decimal ?

[@1stClassMaths]

Hi what do you mean by total amount? If it is the estimate of the population then round it to nearest integer.

[@user-es1pk4og1z]

@@1stClassMaths im not really sure how to explain it so ill just give you the question to make sense of it.
A group of students want to estimate how many woodlice live in a greenhouse. They catch and mark 20 woodlice.
They return the 20 woodlice to the greenhouse.
They then catch 50 woodlice and 11 are marked
Estimate the number of woodlice in the greenhouse.
and the answer I got was 1000/11 so should I round it? or get rid of the recurring decimals? thank you!

[@1stClassMaths]

Round the answer to 91

[@user-es1pk4og1z]

@@1stClassMaths ok thank you!

[@NicoWanTPlay]

But how would you make up for that 0.1 of a woodlouse or does it not matter because it's an estimate​@@1stClassMaths

[@neenourr]

ACCORDING TO GOOGLE 👆🤓 it says the easiest way to mark a bee is to "get the little dot of paint squarely in the center of the bee's thorax"

[@1stClassMaths]

Thanks for this. I will consider it when I next mark some bees.