Statistics 2 Flashcards
1
Q
What is the average/mean called?
A
Summary statistics/ central tendency
2
Q
What are the types of average?
A
Mode, mean and median
3
Q
What is the mode?
A
Most common value in a set of data
4
Q
What is the median?
A
Middle number of a list of numbers
5
Q
What do you do before saying the median?
A
Put numbers in ascending order
6
Q
What is the average’s formula?
A
Sum of the no. divided by no. of no.
7
Q
What is an outlier?
A
A single data value that’s much higher or lower than the rest of the data, it affects the mean.
8
Q
Mean formula:
A
Multiply each frequency by it’s variable, add them and divide by sum of frequency (bottom row)
9
Q
What is mid-interval value?
A
The number between 3 numbers
10
Q
How do you find range?
A
Largest value - smallest value
