Data visualization

Question 1

frequency table

Answer 1

how often values are observed shown in a table

Question 2

absolute value

Answer 2

count. the number of times you have observed a value

Question 3

relative frequency

Answer 3

number of times you have observed a value, expressed as a percentage

Question 4

relative valid frequency

Answer 4

when people leave questions in a survey blank

Question 5

cumulative frequency

Answer 5

add percentage of a group to percentage of previous group

Question 6

pie chart

Answer 6

nominal ordinal
not too many groups
less ratio than bar chart
easily see % of groups

Question 7

bar graph

Answer 7

nominal ordinal
good to visualize frequencies
bars are apart from each other

Question 8

clustered bar graph

Answer 8

nominal ordinal
next or on top of each other
combine two graphs

Question 9

histogram

Answer 9

divide date into fixed groups
8-10 groups often
stacked against each other as the groups are connected

Question 10

box plot

Answer 10

line in the middle is 50%
line indicates rest of the data
Q1 25% Q2 median Q3 75%

Question 11

line graph

Answer 11

watch variable change over time

interval ratio

Question 12

scatterplot

Answer 12

interval ratio
relationship between variables
 postive line up
negative line down
no correlation straight line