Measures Of Locations And Spread Flashcards
1
Q
What is the range
A
The range is the difference between the largest and smallest values in the data set.
2
Q
What is the Interquartile Range (IQR)
A
The difference between the upper quartile and the lower quartile
3
Q
Difference between range and Interquartile Range?
A
The range can be affected by extreme values, The interquartile range is not affected by extreme values.
4
Q
What is the formula for coded data?
A
y = x - a / b
where x is the original data
5
Q
What is the formula for mean-coded data?
A
ȳ = x̄ - a / b
6
Q
What is the formula for the standard deviation of coded data?
A
σy = σx / b
Adding or subtracting constants do not affect the spread out of the data so it can be ignored when finding standard deviations.
7
Q
A
