Topic 3

vocab 1

100

What is the definition of the word "Domain"?

The set of input values (x-values).

200

What does the term "Many to one" mean?

Not a function. 

300

What is the definition of the word "Discrete"? 

Includes only whole numbers or integers for the domain (points). 

400

What is the definition of the word "causation"? 

Cause and effect relationship. If one variable changes then so does the other.

500

What is the definition of the word "Bivariate"?

A set of data that uses two variables.

vocab 2

100

What is the definition of the word "Relation"?

A set of ordered pairs.

200

What is the definition of the word "Sequence"?

An ordered list of numbers that often forms a pattern. 

300

What does the term "common difference" mean?

The difference between any 2 consecutive terms is a constant.

400

What is the definition of the word "Extrapolation"?

Uses model to make prediction about a value outside the range of known values. 

500

What does the term "Linear Regression"? 

A method used to calculate the best fit of the line.

over all/practice

100

What is arithmetic sequence? 

An ordered set of numbers that have a common difference between each consecutive term. 

200

Write a recursive and explicit formula for the arithmetic sequence.

9,15,21,27...

a_n = a_n-1 + 6    where a₁=9

a_n = 9 +(n-1)6

300

What is an interpolation?

An estimate of a value within a range of known values

400

What is extrapolation?

Uses a model to make a prediction about a value outside the range of known values.

500

Wright the recursive formula for the arithmetic sequence

12,23,34,45...

a_n = a_n-1 + 11     a₁ = 12

formulas

100

What is the recursive formula?

a_n= a_n-1 + d   where a₁=?

200

What is the explicit formula?

a_n = a​₁​​​ + (n-1) d

300

What is the formula to determine weather an association is strong positive or strong negative?

-1 ≤ r ≤  1

400

What does a₁ equal in the arithmetic sequence 

7,0,-7,-14...

a₁= 7

500

In the explicit formula of a_n = a₁+ (n-1)d, What is the value of d in the arithmetic sequence

4,8,12,16...

4

strength

100

What does the term "Correlation Coefficient" mean?

Number between -1 and 1 that indicates direction and strength of a linear relationship.

200

What makes an association possitive?

All the x-values are increasing as the chart goes on.

300

Describe the correlation of the coefficient

 r= 0.875

strong positive

400

Describe the correlation of the coefficient 

r= -0.043 

Weak possitive 

500

Describe the correlation of the coefficient

r= -0.976 

strong negative