Chapter 1 - Exploring Data

Question 0

displays the counts of stations in each format category

Answer 0

frequency table

Question 1

The distribution of a categorical variable lists the categories and gives either the ____ or the ____ of individuals who fall within each category

Answer 1

count; percent

Question 2

shows the percentage of stations in each former category

Answer 2

relative frequency table

Question 3

____ or ____ are used to display the distribution of a categorical variable more vividly

Answer 3

pie chart or bar graph

Question 4

distribution of values of that variable among all individuals described by the table

Answer 4

marginal distribution

Question 5

describes the relationship between two categorical variables

Answer 5

conditional distribution

Question 6

knowing the value of one variable helps predict the value of the other

Answer 6

association

Question 7

the count of the distributions of a categorical variable

Answer 7

frequency

Question 8

percent of individuals that fall within each category

Answer 8

relative frequency

Question 9

used to summarize large amounts of information by grouping outcomes into categories

Answer 9

two way table

Question 10

right side of the graph is much longer than the left side

Answer 10

skewed to the right

Question 11

skewed to the left

Answer 11

left side of the graph is much longer than the right side

Question 12

when a graph has a single peak it is

Answer 12

unimodal

Question 13

when a graph has two clear peaks

Answer 13

bimodal

Question 14

graphical display for small data sets that give us the shape of the distribution with the numerical values in the graph

Answer 14

stem plot

Question 15

a graph where nearby values are grouped together in order for a clearer distribution

Answer 15

histogram

Question 16

notation that refers to mean of a sample

Answer 16

x bar

Question 17

notation that refers to mean of population

Answer 17

mew

Question 18

midpoint of a distribution

Answer 18

median

Question 19

measures the range of the middle 50% of the data given

Answer 19

iqr

Question 20

distribution consisting of the smallest observation, the first quartile, the median, the third quartile, and the largest observation, written in order from smallest to largest

Answer 20

five number summary

Question 21

______ graphs can be formed using the five number summary

Answer 21

box plots

Question 22

distance of values in a distribution from the mean

Answer 22

standard deviation

Question 23

the average squared deviation after finding an average of the squares deviations and then taking the square root

Answer 23

variance

Question 24

use ____ and ____ only for reasonably symmetric distributions that don’t have outliers

Answer 24

mean and standard deviation

Question 25

use ____ and ____ for describing a skewed distribution or a distribution with strong outliers

Answer 25

median and IQR

Question 26

Four step process to organize a statistics problem

Answer 26

state
plan
do
conclude