Introduction to Statistics in Psychology, Central Tendency, and Variability
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Course
Psychology (PSY201H5S)
Institution
University Of Toronto (U Of T
)
These course notes cover fundamental topics present in any introductory statistics class. This includes the distinction between descriptive and inferential statistics, understanding scales of measures and variable types, a basic run-down of frequency distributions and how to calculate central tende...
Terminology
2. Parameters -
numerical, nominal descriptor a
of population
2. Statistic -
numerical, nominal descriptor of sample
3. Variables) -
any or trait
quantity that
can
vary (e.g., heigh, eye colour)
↳ . Quantitative. v- variables which indicate amounts, degrees
↳ S. Continous, Qualitative. V -
of
measurement (kinds),
quality continuous
quantitative variables can be ANY amount
5.5 6.5 <.S
6.5 upper limit score of
is
is
6. Lower limit
7
In memory recall
7. Upper limit 7 8 -Becall memory. I can be
8. Discreet. V- Intermediate
scores for
6.5 or 7.5, butw ill be
discreet values are not meaningful (7)
expressed as
/e.g., intermediate values are not possible;
of shoes you own)
#
9.
Categorical v. -
(qualitative.v) differ in kinds, amount.
not
eye colour, political affiliation, ordered kinds
-
lo. Independent. V 2 3 5 independent." (manipulated)
=
+
Dependent.v (observed
Y
2 4 6
+
=
11. Dependent. V Extraneous.(notintentionally
2 9 11
+
=
manipulated)
1. 2. Extraneous,
Experimental Design:DV varies with IV while keeping
confounding. V Ev constant.
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