Math - Tables, Charts and Graphs

Question 1

What is a Bar Graph and what is it used for?

Answer 1

a graph that uses bars to compare data in different groups; compare quantities across different categories or groups

Question 2

What is a Cartesian Plane and what is it used for?

Answer 2

used to graph points on a two dimensional plan on the x and y axis

Question 3

What is a Line Graph and what is it used for?

Answer 3

a graph of a line showing how one variable changes against another (usually changes over time); shows trends and changes over time

Question 4

What is a Pie Chart and what is it used for?

Answer 4

shows pieces of a whole (remember percents); show proportions and percentages among categories, representing them as slices of a pie.

Question 5

What is a Histogram and what is it used for?

Answer 5

data is grouped into ranges and then plotted as bars; show how often different values appear in a dataset = distribution

Question 6

What is a Scatter Plot and what is it used for?

Answer 6

shows the relationship (or correlation) between two sets of data

Question 7

Compare a Positive Covariance vs a Negative Covariance

Answer 7

Positive Covariance: both variables are going in the same direction; when one variable increases, the other also increases

Negative Covariance: the variables go in opposite directions; when one variable increases, the other decreases

Question 8

How do you identify an Independent variable from a Dependent variable?

Answer 8

Independent variable: the variable that you are purposefully changing (x-axis)

Dependent variable: the variable that you are measuring (y-axis)