Graphing Data

Question 1

what kind of data do we use histograms for

Answer 1

categorical data

binned numerical data

Question 2

how do we do a histogram in SPSS

Answer 2

graphs, legacy, histogram

Question 3

what do error bars indicate

Answer 3

the variability or confidence interval for a data point

Question 4

when do we use error bars

Answer 4

whenever we display a mean of several measurements

Question 5

what can be used to make the error bars

Answer 5

standard deviation
standard error of the mean
confidence intervals

the figure should say what is being used to create the error bar

for variance it must say what its showing varies if theres multiple possibilities

Question 6

how do we do error bars in SPSS

Answer 6

graphs
legacy
error bar

click summaries for groups of cases - for between subject OR summaries of separate variables - within subject

Question 7

when do we use simple error bars

Answer 7

if we only want to consider one invependent variable eg word type

Question 8

when do we use clustered error bars

Answer 8

if we want to consider two independent variables eg word type and gender

Question 9

how do you add a line of best fit to a scatter graph in SPSS

Answer 9

double click graph to bring up ‘chart editor’ window

single click on one of the data points so that they all glow blue

select from the menu - chart, add chart element, fit line at total then press linear usually