Math unit 3 test Flashcards
sequence
an ordered list of numbers that often follows a pattern
term number
what number term a number in a sequence is
term value
the numbers we see in a sequence
arithmetic sequence
a sequence in which the difference between any two consecutive terms is a constant
common difference
the same difference in any two consecutive terms in a arithmetic sequence
recursive formula
a formula used in arithmetic sequences where using the first term value, the rate of change, and the previous term value from the term value you want, you can find any term value
a(n)=
a(n)=a(n-1)+d
explicit formula
a formula used in arithmetic sequences where if you have the first term value, the rate of change, and the term number of the number of your choosing, you can find any term value
an = a + (n - 1)d
scatter plot
a set of points plotted on a graph to show the relationship between two or more variables
scatter plot
a set of points plotted on a graph that shows the relationship between two or more variables
line of best fit
a line on a scatter plot that helps show a relationship between two or more variables
association
different ways points on a scatter plot are related
positive association
when the x value increases, the y value also increases.
negative association
when the x value increases, the y value decreases
no association
the x and the y value are not related, and the y value fluctuates at will
correlation coefficient/r value
a number from-1 to 1 that tells you how closely the line of best fit models the data
