TSI Math: Manipulating a Data Set to Find a Different Mean

The mean of a, b, c, and 10 is 16. What is the mean of a, b, and c?

Data Analysis, Statistics, and ProbabilityStatistical Measures
Mathematics and Statistics AssessmentStatistical Measures
Product TypeTSI
TSIMathematics and Statistics Assessment
TSI Math
TSI Mathematics
TSI MathData Analysis, Statistics, and Probability
TSI MathematicsData Analysis, Statistics, and Probability
Test PrepTSI

Transcript

00:21

us because we mean business using the algebraic definition of

00:26

mean which is the same thing as average Take the

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given information the problem to set up an equation Well

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the average of four numbers is there some divided by

00:34

four So what do we know We know this a

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plus B plus c plus ten divided by four is

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sixteen well it's just multiply both sides by four teo

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cancel out the fraction thing they're so we've got a

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plus B plus c plus ten is sixty four or

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interested in a plus b plus c so think of

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this sum is a single variable that we want to

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isolate shipwrecked in from both sides and that gets us

00:56

a b and c equal to fifty for wealthy average

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of a b and c is a plus b plus

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c over three And we know that a b and

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c total two Fifty for so just divide by three

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Well in california fifty for over three is eighteen Same

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deal in texas so the meaning of a b and

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c is eighteen and that's our answer It see and 00:01:17.204 --> [endTime] we're smoked