saptamana trei Flashcards
1
Q
What are the measures of central tendency?
A
Mean
Mode
Median
2
Q
What is mean?
A
Average
Used with interval data
3
Q
What is median?
A
Mid-point
Used with ranked data/ when data is skewed
4
Q
What is mode?
A
Most common response
Used with nominal data
5
Q
What are measures of dispersion?
A
The spread of the data
How far away of the mean each score is
6
Q
What is variation?
A
Estimate of variance of population from a sample
7
Q
What is standard deviation?
A
Measure of how spread out the numbers are
Always report with descriptives
Gives additional information beyond descriptives
To calculate:
Work out the variance
Take the square root
