Unit 2- calculations and data interpretations

Question 1

PEMDAS

Answer 1

Parentheses
Exponents
Multiplication and Division
Addition and subtraction

Question 2

bar graphs

Answer 2

used for Qualitative Data

ex: we talie mark how many (purple) t shirts were sold during a certain time total and you put them on the graph.

Question 3

histograms

Answer 3

used for quantitative data. no gaps in histograms.

Question 4

cyclical trend

Answer 4

a pattern that tends to repeat itself every few years and its observed for a long time period.

Question 5

linear equation

Answer 5

type of equation when the slope between any two points is constant

Question 6

seasonal trend

Answer 6

upward or downward movement in data that repeats regular intervals

Question 7

positive correlation

Answer 7

exists when one variable decreases as the other variable decreases, or one variable increases while the other increases.

Question 8

negative corralation

Answer 8

is a relationship between two variables in which one variable increases as the other decreases, and vice versa.

Question 9

linear correlation

Answer 9

refers to straight-line relationships between two variables.