TC3 → Stan Brown → Statistics → Inferential Stats Cases
revised 26 Dec 2009

Inferential Statistics Cases

Copyright © 2007–2010 by Stan Brown, Oak Road Systems

Summary:  This table organizes procedures for inferential statistics into a chart of Cases. If you print this page, use Landscape mode for best results.

See also:  Triage: Which Inferential Stats Case Should I Use?

Case Number
and Description
Text
Sec.
Pop. Param. TI-83/84/89 Procedures
* These cases are not required for TC3 MATH200. For just the MATH200 cases, see Inferential Statistics: Basic Cases.
NUMERIC DATA
SRS required: n ≥ 30, or sample is ND with no outliers
0One pop. mean, known σ 9.1, 10.2 μ CI: ZInterval; HT: Z-Test; sample size: MATH200A part 6
1One pop. mean, unknown σ 9.2, 10.3 μ CI: TInterval; HT: T-Test; sample size (optional): MATH200A part 6
1S*One pop. standard dev. C.2, C.3 σ CI and HT: MATH200B part 5 (not TI-89)
3Mean difference for paired data 11.1 μd CI: TInterval; HT: T-Test; (optional) List Operations for Paired t Test on TI-83/84
4Difference of 2 indep. pop. means 11.2 μ1−μ2 CI: 2-SampTInt; HT: 2-SampTTest
4S*Two pop. standard dev. none σ12 CI: n/a; HT: 2-SampFTest
8*Equality of several pop means C.4 μ1, μ2, μ3, ... CI: undefined; HT: ANOVA; see also One-Way ANOVA
9*Linear correlation coefficient none ρ or r CI and HT: MATH200B part 6 (TI-89 HT: LinRegTTest)
10B*Slope of regression line 12.3 β1 CI and HT: MATH200B part 7 (TI-89 CI: LinRegTInt; TI-89 HT: LinRegTTest)
10Y*Predicted values of y 12.4 μy|xj, yj MATH200B part 7 (not TI-89)
BINOMIAL DATA
SRS required: n (1−) ≥ 10 and 20 n ≥ N
2One pop. proportion 9.3, 10.4 p CI: 1-PropZInt; HT: 1-PropZTest; sample size: MATH200A part 6
5Difference of 2 pop. proportions 11.3 p1−p2 CI: 2-PropZInt; HT: 2-PropZTest; sample size: MATH200A part 6
CATEGORICAL DATA
SRS required: no E’s < 1 and no more than 20% of all E’s < 5
6Goodness of fit (GOF) or multinomial 12.1 none CI: undefined; HT: MATH200A part 7 (TI-89: Chi2 GOF or Testing Goodness of Fit on TI-89)
7Independence or homogeneity
(in contingency table)
12.2 none CI: undefined; HT: χ²-Test (TI-89: Chi2 2-way)

Acknowledgement: This table was inspired by Dabes & Janik’s Statistics Manual (1999) page 163; I have modified the format substantially and added cases 1S, 4S, 8, 9, 10B, 10Y.


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