Descriptive statistics Flashcards
1
Q
What are the 3 types of central tendency?
A
> Mean
Median
Mode
2
Q
What is the mean
A
Sum of all values in the data set divided by how many values there are
3
Q
What is the median
A
Central value when the data is arranged in ascending order
4
Q
What is the mode
A
The most common value in the data set (remember it as most)
5
Q
What are the 3 types of dispersion
A
> Mean deviation
Standard deviation
Range
6
Q
What is mean deviation
A
Average difference between a single value and the mean value
7
Q
What is standard deviation
A
Estimate of the mean deviation within the population
8
Q
What is the range
A
the difference between the highest and lowest value in the set
9
Q
How do you work out the range
A
Highest value - lowest value in the dataset
