2.2 Flashcards
1
Q
What is mean?
A
the average
2
Q
What is median?
A
- the middle number after putting a list from smallest to largest or largest to smallest
- odd number list = 1 middle number
- even number list = two middle number/ 2
3
Q
What is mode?
A
number that occurs the most
4
Q
What is the shape of a normal distribution? What is another name for it?
A
- bell shaped
- symmetrical
5
Q
What is the direction of a skewed distribution named by?
A
direction the tail tapers
6
Q
What is another name for left skew?
A
negative skew
7
Q
what does bimodal mean?
A
2 peaks
8
Q
What is a positive correlation/ trend?
A
2 variables are going in the same direction (either both going up or both going down)
9
Q
What is a negative correlation/ trend?
A
2 variables going in opposite directions
