Chapter 1
What is negative correlation?
One set of data increases as the other decreases.
What property is this?
a(b+c) = ab+ac
a(b-c) = ab-ac
The Distributive Property
What is the Pythagorean Theorem?
a2+b2 = c2
A number's distance from 0.
What is an irrational number?
What is theoretical probability?
# of favorable outcomes/# of possible outcomes.
What does the symbol √ indicate?
Square root.
What do you call 2 inequalities with the same solution?
Equivalent inequalities.
What is a function?
A relationship that assigns exactly one output value for each input value.
What is experimental probability?
# of times an event occurs/# of times the experiment is done.
What is a ratio?
A comparison of 2 numbers by division.
What is a solution of an inequality?
Any number that makes the inequality true.
Name the three measures of central tendency.
Mean, median, and mode.
What are independent events?
Events that do not influence each other.
What is a rate?
A ratio with quantities that are measured in different units.
What are the 2 solutions of lxl = 10?
10 and -10.
What is the order of operations?
(4 parts)
1 Perform any operation(s) inside grouping symbols.
2 Simplify powers.
3 Multiply and divide in order from left to right.
4 Add and subtract in order from left to right.
What are dependent events?
events that influence each other.
What is a proportion?
An equation that states that 2 ratios are equal.
What is a compound inequality?
2 inequalities that are joined by the word and or the word or.