Functions
What do you need to know about functions?
A relation between a set of inputs having one output each
Can a real number be negative?
Yes
What is the square root of 144?
12
What are the advantages and disadvantages of scatter graphs?
they are great for overviews, finding outliers, and for showing patterns between some dimensions.
How many girls had blonde hair?
Is a circle a function?
No
What is a fact about real numbers?
Real numbers are numbers that include both rational and irrational numbers.
What is the square root of 36?
6
How do you know if a scatter plot is positive?
uses dots to represent values for two different numeric variables.
How many girls had brown hair?
1
How do you identify a function?
Check to see if any of the x values are repeated - if not, it is a function
What makes up real numbers?
Real numbers include rational numbers like positive and negative integers, fractions, and irrational numbers
What is the square root of 289?
17
How do you identify a scatter plot?
X-axis representing values of a continuous variable. Y-axis representing values of a continuous variable. Symbols plotted at the (X, Y) coordinates of your data. Optionally, you can overlay fit lines to determine how well a model fits the data.
How many boys had black hair?
6
What type of function is a straight line?
Linear Functions
Can a fraction be a real number?
Yes all fractions can
What is the square root of 225?
15
How do you tell if a scatter plot is strong or weak?
If the points are clearly clustered, or closely follow a curve or line, the relationship is described as strong.
How many girls and boys in total had black hair?
15
Is this a function?
{(1,1), (2,3), (2,2), (3,3)}
Is 3.14 known as PI a real number?
Yes
What is the square root of 256?
16
What does a scatter plot predict?
whether there is a relationship or not between paired data
How many children participated in the two way table in total?
30