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## QUANT METHOD PSYCH

by: Mr. Vernie Wehner

21

0

0

# QUANT METHOD PSYCH PSYC 3214

Mr. Vernie Wehner
OK State
GPA 3.67

Sondra Nolf

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COURSE
PROF.
Sondra Nolf
TYPE
Class Notes
PAGES
0
WORDS
KARMA
25 ?

## Popular in Psychlogy

This 0 page Class Notes was uploaded by Mr. Vernie Wehner on Sunday November 1, 2015. The Class Notes belongs to PSYC 3214 at Oklahoma State University taught by Sondra Nolf in Fall. Since its upload, it has received 21 views. For similar materials see /class/232878/psyc-3214-oklahoma-state-university in Psychlogy at Oklahoma State University.

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Date Created: 11/01/15
Steps in NHST Null Hypothesis Signi cance Testing 1 State hypotheses in 3valued logic form Hypotheses are stated using population parameters 2 Examine data and decide on statistical test eg ztest one of several ttests etc 3 Choose critical pvalue alpha Usually 05 is chosen sometimes 01 4 Obtain critical value from appropriate table that is set up rejection region 5 Plugandchug through formula of statistical test to obtain observed value 6 Compare observed and critical values and draw conclusion regarding the hypotheses 7 Compute and interpret effect size estimate 8 Construct and interpret appropriate con dence intervals Steps in NHST Null Hypothesis Signi cance Testing 1 State hypotheses in 3valued logic form Hypotheses are stated using population parameters 2 Examine data and decide on statistical test eg ztest one of several ttests etc 3 Choose critical pvalue alpha Usually 05 is chosen sometimes 01 4 Obtain critical value from appropriate table that is set up rejection region 5 Plugandchug through formula of statistical test to obtain observed value 6 Compare observed and critical values and draw conclusion regarding the hypotheses 7 Compute and interpret effect size estimate 8 Construct and interpret appropriate con dence intervals Steps in NHST Null Hypothesis Significance Testing 1 State hypotheses in 3valued logic form Hypotheses are stated using population parameters 2 Examine data and decide on statistical test eg ztest one of several ttests etc 3 Choose critical pvalue alpha Usually 05 is chosen sometimes 01 4 Obtain critical value from appropriate table that is set up rejection region 5 Plugandchug through formula of statistical test to obtain observed value 6 Compare observed and critical values and draw conclusion regarding the hypotheses 7 Compute and interpret effect size estimate 8 Construct and interpret appropriate con dence intervals Example problem for z test for means A graduate student Martin collected a sample of alcoholics to test the hypothesis that longterm alcoholics will have lower overall intelligence than the general population In his study Martin sampled 20 longterm alcoholics and administered the StanfordBinet Intelligence Scale which has been standardized with a mean of 100 and standard deviation of 16 The data follow 90 100 97 68 98 96 95 96 78 98 100 90 98 95 90 77 87 101 100 90 Using an alpha level critical pvalue of 05 and a ztest for means work through the steps in Example problem for z test for means A graduate student Martin collected a sample of alcoholics to test the hypothesis that longterm alcoholics will have lower overall intelligence than the general population In his study Martin sampled 20 longterm alcoholics and administered the StanfordBinet Intelligence Scale which has been standardized with a mean of 100 and standard deviation of 16 The data follow 90 100 97 68 98 96 95 96 78 98 100 90 98 95 90 77 87 101 100 90 Using an alpha level critical pvalue of 05 and a ztest for means work through the steps in NHST Example problem for z test for means A graduate student Martin collected a sample of alcoholics to test the hypothesis that longterm alcoholics will have lower overall intelligence than the general population In his study Martin sampled 20 longterm alcoholics and administered the StanfordBinet Intelligence Scale which has been standardized with a mean of 100 and standard deviation of 16 The data follow 90 100 97 68 98 96 95 96 78 98 100 90 98 95 90 77 87 101 100 90 Using an alpha level critical pvalue of 05 and a ztest for means work through the steps in NHST

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