TSI Math: If a Sick Tree Falls in a Linear Equation, Can Anybody Find the y-Intercept?
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The equation y = -0.65x + 47.67 relates the number of intact plants (y) to the number of sick trees (x). What is the correct interpretation of the y-intercept?
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
intercept Whether in a plain old linear equation or from
a linear regression equation we're always gonna have the same
kind of interpretation This interpretation comes from the structure of
the co ordinates of a why intercept since a y
intercept must by definition be a point on the y
axis It must have a coordinate like this like zero
pound for pound is not the sign of a tweet
It's the value of the y intercept the x value
must be zero because we haven't gone left or right
on the coordinate plane there We just went out as
such when we interpret a why intercept We always say
when the x value or context for the x value
is zero The context of the y intercept is then
whatever the y intercept is our ex is the number
of sick trees while our why is the number of
intact plants That means our interpretation is when the number
of sick trees is zero i either very healthy We
expect the number of intact plants to be forty seven
point six Seven Okay you can be a little more
natural and just say well when there are no sick
trees we expect around forty seven point six Seven intact
plans Or we could just say c as in See
you later Shmoop