Introduction to Statistics - Summary, Tilburg University (7,5)
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Course
Introduction to Statistics
Institution
Tilburg University (UVT)
Book
Statistics for the Behavioral Sciences
Summary study book Statistics for The Behavioral Sciences of Larry Wallnau, Frederick Gravetter (Chapter 1 to 11, 15, 17 and 18) - ISBN: 9781305504912, Edition: 10th edition, Year of publication: -
Test Item File- Practice Test - Statistics for the Behavioral Sciences, Gravetter,10e
Introduction to Statistics book summary notes
Test Bank for Statistics for the Behavioral Sciences 10th Edition by Frederick Gravetter, Larry B. Wallnau | All Chapters Included | Complete Latest Guide A+.
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Written for
Tilburg University (UVT)
Psychology [EN]
Introduction to Statistics
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Content preview
Frequency distribution: Analyze Descriptive Statistics Frequencies, enter variables
FREQUENCIES VARIABLES=…
/ORDER=ANALYSIS
Information about data: Analyze Descriptive Statistics Descriptives Options adding mean,
standard deviation, variance, min, max.
DESCRIPTIVES VARIABLES =
/STATISTICS = MEAN STDDEV VARIANCE MIN MAX.
Histogram: Graphs Legacy Dialogs Histogram, Display Normal Curve, enter variable
GRAPH
/HISTOGRAM(NORMAL)=…
Scatterplot: Graphs Legacy Dialogs Scatter/dot Simple Scatterplot Define, put x-axis and
y-axis.
GRAPH
/SCATTERPLOT(BIVAR)=… WITH …
/MISSING=LISTWISE
Correlation: Analyze Correlate Bivariate, check pearson.
o Correlation significant means that we can conclude with CI certainly that there is a
relationship between the two variables. Also we are allowed to generalize to our finding to
the entire population our sample came from.
CORRELATIONS
/VARIABLES= … …
/PRINT=TWOTAIL NOSIG
/MISSING=PAIRWISE.
Outlier? Delete row or replace with missing value
Two groups: Data Split File Compare groups, enter variable
SORT CASES BY ….
SPLIT FILE LAYERED BY …
Sorting cases: Data Sort Cases enter variable
SORT CASES BY …
Only some cases: Data Select Cases If condition is satisfied click “If..” and specify
COMPUTE filter_$=(…).
VARIABLE LABELS filter_$ 'hours … (FILTER)'.
VALUE LABELS filter_$ 0 'Not Selected' 1 'Selected'.
FORMATS filter_$ (f1.0).
FILTER BY filter_$.
EXECUTE
Missing variable: Variable View column “Missing” specify discrete missing value recompute
frequency distribution
MISSING VALUES … (99)
EXECUTE.
Variable view
Name = short variable name
Label = longer description of variable
Values = meaning of values
Measure = level of measurement of variable
Percentage = dividing observed frequency by total N.
Valid percentage = dividing observed frequency by respondents with valid score.
Standard error of the mean = how much every sample differs from the mean of the population.
Describing normal distribution = the peak builds up but there is a drop in the middle, the extreme
scores have a low frequency. I would say this is not a normally distribution
Describing linear relation = it seems like there is a positive linear relationship between these two
variables; the lower the … the lower the …, and the higher the … the higher the ...
Clicking on “OK” will do it, clicking on “Paste” opens Syntax Editor
Always a period at the end of the command.
All options and command available: Help Command Syntax Reference. Or selecting command in
Syntax Editor and then clicking on “Syntax Help”
Ending split file: command in Syntax Editor
SPLIT FILE
OFF.
Comments in Syntax Editor to know what you did:
COMMAND BLABLA
* This line is a comment.
One-sample t-test: Analyze Compare Means One-Sample T-test, enter variable
includes:
o N = sample size
o Mean = mean in sample
o Std. Deviation = standard deviation in sample
o Std. Error = standard error
o t = test statistic
o df = degrees of freedom
o Sig. 2-tailed = two-tailed p-value
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