2. measure of location and spread Flashcards
(18 cards)
1
Q
mode/modal class
A
value that occurs the most
2
Q
median
A
middle value
3
Q
mean formula
A
total x/n
4
Q
lower quartile
A
one quarter of the way through the data set
5
Q
upper quartile
A
three quarters of the way through the data set
6
Q
LQ=
A
n/4
7
Q
median =
A
n/2
8
Q
UQ=
A
3/4 x n
9
Q
range def
A
difference between largest and smallest value
10
Q
IQR def
A
diff between upper quartile and lower quartile
11
Q
inter percentile range
A
difference between the values of the given percentiles
12
Q
types of data
A
discrete
continuous
qualitative
quantitive
13
Q
discrete-
A
can take only specific values
14
Q
continuous-
A
can take any value
15
Q
qualitative
A
doesn’t include numbers
16
Q
quantitive
A
includes numbers
17
Q
mean coded data formula
A
y = mean x -a / b
18
Q
standard deviation of y coded
A
sigma y = sigma x/ b
