RANDOM VARIABLES + FDT Flashcards
1
Q
measures the extent to which data is dispersed / spread out
A
measures of dispersion
2
Q
measure of asymmetry of a distribution
A
skewness
3
Q
used for ORDINAL data
A
quartile deviation
4
Q
amount of spread between:
1. 1st Quartile and Median
OR
2. Median and 3rd Quartile
A
quartile deviation
5
Q
average of absolute values
A
Mean Absolute Deviation
6
Q
If MAD is small, scores are _____
A
close
7
Q
If MAD is big, scores are _____
A
scattered
8
Q
_x
A
mean
9
Q
N
A
total number of data / population size
10
Q
low standard deviation -
A
close
11
Q
high standard deviation -
A
spread
12
Q
2 sets of data may have same measures of central tendency BUT must have different variations
A
TRUE
13
Q
i
A
class range
14
Q
the modal class is the class with __________
A
highest frequency
15
Q
a collection of all possible events
A
sample space
