Vocabulary
What do you call it when you rearrange an equation so the variable is on one side of the equal sign and the numbers are on the other side?
Isolating a variable
What does each letter in PEMDAS stand for?
Parentheses, Exponent, Multiplication, Division, Addition, Subtraction
Solve for x
x+12=15
x=3
What type of data is this:
red, green, brown, yellow
Qualitative
What is the inverse operation of addition?
Subtraction
In data analysis, what do you call the whole group you want to learn about?
Population
2^2+1-5
0
Solve for z
3z+9=18
z=3
What type of sampling is this: To check the quality of their products, a company randomly selected 50 lightbulbs from the entire production line of 10,000 bulbs.
Simple random sampling
Simplify
3(6/3-4)^2+2
14
What do you call data that uses numbers you can measure or count?
Quantitative Data
(5xx2)-6/3-1
7
y/4-3^2=-3
y=24
A track coach asks his team to run a mile and records each runner's time. What type of data is this?
Quantitative
What is the inverse operation of multiplication?
Division
What do you call using chance to choose people or groups so the results are more fair?
Randomization
3(12-2xx3)-6
12
Solve for t
3(t-1)+4=19
t=6
A survey question is worded confusingly and leads respondents to a particular answer. "Don't you agree that math class is fun?" What type of error is this?
Measurement error
solve for r
3(r+3)-1=5
r=-1
What do you call sampling that splits the population into groups, then randomly picks some from each group?
Stratified Sampling
15-(2^3-12)+1
20
Solve for g
-3(g+1)+4^2=-5
g=6
A city wants to understand opinions about a new highway so it sends data collectors to knock on every resident's door between 9:00am and 12:00pm on a Wednesday. What type of bias is likely in their results?
Why is the MAP test important for your success in AFDA this year?
It gives your teachers a snapshot of your strengths and weaknesses so they can help you grow.