# 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 Probability | Statistical Measures |

Mathematics and Statistics Assessment | Statistical Measures |

Product Type | TSI |

TSI | Mathematics and Statistics Assessment TSI Math TSI Mathematics |

TSI Math | Data Analysis, Statistics, and Probability |

TSI Mathematics | Data Analysis, Statistics, and Probability |

Test Prep | TSI |

### Transcript

us because we mean business using the algebraic definition of

mean which is the same thing as average Take the

given information the problem to set up an equation Well

the average of four numbers is there some divided by

four So what do we know We know this a

plus B plus c plus ten divided by four is

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

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

plus B plus c plus ten is sixty four or

interested in a plus b plus c so think of

this sum is a single variable that we want to

isolate shipwrecked in from both sides and that gets us

a b and c equal to fifty for wealthy average

of a b and c is a plus b plus

c over three And we know that a b and

c total two Fifty for so just divide by three

Well in california fifty for over three is eighteen Same

deal in texas so the meaning of a b and

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