graphs

Question 1

why are graphs and charts useful

Answer 1

they provide a way of seeing findings at a glance

Question 2

what is raw data

Answer 2

the numbers you collect which have not been treated in any way

Question 3

what data are bar charts used for

Answer 3

categorical data

Question 4

what do the spaces in a bar chart represent

Answer 4

discontinuity

Question 5

what do the heights of the bars in a bar chart represent

Answer 5

frequency

Question 6

what must the area of a bar in a histogram be proportional to

Answer 6

the frequencies represented

Question 7

what must the vertical axis begin with in a histogram

Answer 7

0

Question 8

what must all values along the x axis be in a line graph

Answer 8

continuous

Question 9

when are line graphs used

Answer 9

for data that have some implicit order, such as numerical data

Question 10

what are scatter graphs used for

Answer 10

correlational analysis

Question 11

what do the x and y axis in a scatter graph represent

Answer 11

scores in two conditions