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All right sy Match members Here we go Last one

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in this siri's Find the missing value in the following

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two way table Okay well we've got a two way

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table about snakes and salamanders What could be better to

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wait Tables relate the different possible outcomes between two variables

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The two variables this time our island location and type

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of animal So there are two island location outcomes east

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and west and two outcomes for animals Salamander and snake

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Not like live or dead No Well this two way

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table has what are called marginal values which are simply

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roll in column totals if there were no marginal totals

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Well there'd be no way to answer this question So

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it is however completely cool to have a two way

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table without marginal values So the number of snakes on

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west island is missing There are three ways to find

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this value The first involves using the west island ro

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There are thirty total animals on west island from marginal

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value and then west silent role Right there There are

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two salamanders and the rest of the thirty must be

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snakes That means twenty eight snakes that's What would go

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there Write another way would be to use the snakes

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column and their sixty one total snakes on both islands

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and the east Island has thirty three The rest must

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be on west island that's sixty one month twenty eight

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snakes right Well the final way to solve its problems

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that take the total one o two and subtract all

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the other values on the interior of the table And

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so you'd subtract two than thirty nine thirty three and

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yeah that's twenty eight as well and all frankly if

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it takes way more time so we prefer the first

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two methods but that's it The total is twenty eight

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Answer is b and a snake and salamander shmoop dear

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