Chapter 10 Vocab Flashcards
1
Q
Distribution of a variable
A
tells us what values it takes and how often it takes these values.
2
Q
Roundoff errors
A
when table entries are percentages or proportions, the total may sum to a value slightly different from 100% or 1.
3
Q
Pie charts
A
show how a whole is divided into parts.
4
Q
Categorical variable
A
places an individual into one of several groups or categories.
5
Q
Quantitative variable
A
takes numerical values for which arithmetic operations such as adding and averaging make sense.
6
Q
Seasonal variation
A
a pattern that repeats itself at known regular intervals of time
7
Q
seasonally adjusted
A
the expected seasonal variation is removed before the data are published
