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Algebra Chapter 4

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Section 1

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trend line

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Algebra Math

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6 years ago

Date created

Mar 1, 2020

Cards (20)

Section 1

(20 cards)

trend line

Front

a line on a scatter plot drawn near the points. it shows a correlation (also known as a best-fit line)

Back

median-fit line

Front

a type of best-fit line that is calculated using the medians of the coordinates of the data points

Back

linear regression

Front

an algorithm to find a precise line of fit for a set of data; The equation has the form Y= a + bX, where Y is the dependent variable (that's the variable that goes on the Y axis), X is the independent variable (i.e. it is plotted on the X axis), b is the slope of the line and a is the y-intercept.

Back

perpendicular lines

Front

two lines that have slopes that are negative reciprocals of each other

Back

linear interpolation

Front

the use of a linear equation to predict values inside the range of data

Back

point-slope form

Front

y-y₁=m(x-x₁), where m is the slope and (x₁,y₁) is a given point on the line

Back

scatter plot

Front

a graph of data points

Back

standard form

Front

Ax + By = C, where a and b are both not zero and their greatest common factor is 1

Back

best-fit line

Front

the line that most closely approximates the data in a scatter plot

Back

correlation coefficient

Front

the number that describes how closely a best fit line models a set of data

Back

regression analysis

Front

measures the impact of a set of variables on another variable

Back

regression line

Front

another name for the line of best fit; using the formula y= m x + b

Back

parallel lines

Front

two distinct nonvertical lines that have slopes that are equal

Back

linear extrapolation

Front

the use of a linear equation to predict values outside the range of data

Back

constraint

Front

limitation or restriction

Back

causation

Front

where the change in one variable causes or produces the change in another variable

Back

inverse relation

Front

the set of ordered pairs obtained by exchanging the x coordinates with the y coordinates of each ordered pair of a relation or function

Back

line of fit

Front

a line that comes close to the data points for the scattered plot, even if all the data points do not lie on that line

Back

inverse function

Front

a function that undoes the action of another function

Back

bivariate data

Front

data with two variables, such as year and number of visitors

Back