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18 Cards in this Set
- Front
- Back
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Possible stats for DESCRIPTION research
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-mode (nom/ord),
-median, interquartile range (ord), -MMM, interQ range, SD, t-test for indiv means (interval/ratio) |
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Possible charts to use with DESCRIPTIVE research
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-bar chart, pie chart,
-stem & leaf, dot plot, -historgram, box plot |
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Possible stats for COMPARISON research
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-cochran Q, chi square
-Wilcoxon Matched-pairs, signed ranks test, mann-whitney U test -friedman 2-day ANOVA, kruskal-wallis 1-way ANOVA -t-test, Z ratio -ANOVA, ANVOCA |
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Possible charts to use with COMPARISON research
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bar/pie/stem/dot/hist/box
-combined bar charts/dot/hist |
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Possible stats to use with RELATIONAL research
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-chi square, contingency coefficient (nom)
-spearman rank-order correlation (ord) -+ pearson product moment corr. regress (int/ratio) -pt biserial corr (nom vs int/rat) -biserial corr (ord vs int/rat) |
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possible charts to use with RELATIONAL research
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all mentioned
-boxplots x by y (ord) -scatterplot w/regress line (Pear. Prod. corr) -bar chart (nom on X and int/rat on Y) -bar chart (ord on X and int/rat on Y) |
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Possible stats to use with NOMINAL variables
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Desc: mode
Comp: Cochran Q, Chi Square -(1 nom, 1 ord) Wilcoxon Matched Pairs, Signed Ranks Test, Mann whitney U Test -(1 nom, 2+ ord) 2 way ANOVA, 1 way ANOVA -(1nom, 1int/rat) t test, z ratio (1nom, 2+int/rat) ANOVA, ANCOVA Relat: chi square, contingency coeff -(nom vs int/ord) pt biserial corr |
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Possible stats to use with ORDINAL variables
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Desc: mode, median, interQ range
Comp: (1 ord, 1 nom) Wilcoxon Matched Pairs, Signed Ranks Test, Mann whitney U Test -(2+ord, 1nom) 2 way ANOVA, 1 way ANOVA Relat: spearman rank-order correlation -(ord vs int/rat) biserial correlation |
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Possible stats to use with INTERVAL or RATIO variables
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Desc: MMM, interQrange, SD, t-test
Comp: (vs 1 nom) t test, z ratio (+desc) -(2+ vs 1nom) ANOVA, ANCOVA Relat: pearson product moment corr, regression -(vs nom) pt biserial corr -(vs ord) biserial corr |
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What is DESCRIPTIVE research?
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-describes one group at one time in one place (e.g., average height of the class)
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What is COMPARATIVE research?
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comparing 2+ groups, (e.g., men vs women)
OR 1 group at 2 time or in 2 contexts (e.g, child at age 5 and 10) |
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What is RELATIONAL research?
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compares two variables, one's effect on the other (e.g., room temperature and amount of fidgeting)
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What is CAUSAL research?
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-experimenter controls all variables, can be relational or comparative
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what is EXPERIMENTAL vs NON-EXPERIMENTAL research?
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-ex: apply tx or change
-non: just observe an report |
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What is a NOMINAL variable?
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-qualaitative descriptors
-mutually exclusive: each falls into only one category -exhaustive: must fall into one category -no numbers! -e.g., colors, named groups |
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What is an ORDINAL variable?
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-order matters (1st, 2nd, 3rd)
-value or distance between places not accounted for -can judge if x>y>z, then x>z holds true |
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What is an INTERVAL variable?
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-a continuum with equal difference between values.
-arbitrary zero -can add/subtract, no multiplying or dividing -e.g., IQ, GRE scores, temperature |
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What is a RATIO variable?
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-continuum, true zero
-can perform all sorts of math to it -e.g., height, weight, # correct |
