Basic Statistical Concepts, a Self-instructional Text |
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Page 116
... subgroups by random methods should yield subgroups that are quite similar , both in their average learning ability and in their variation . Any differences should be the result of chance variations in the randomized division of the ...
... subgroups by random methods should yield subgroups that are quite similar , both in their average learning ability and in their variation . Any differences should be the result of chance variations in the randomized division of the ...
Page 119
... subgroups were selected to represent a common or single_ If , as a result of the experiment , the dif- ference between the subgroups is statisti- cally significant , we say each subgroup now represents a . -population . 1 2 3 4 ...
... subgroups were selected to represent a common or single_ If , as a result of the experiment , the dif- ference between the subgroups is statisti- cally significant , we say each subgroup now represents a . -population . 1 2 3 4 ...
Page 120
... subgroups , the means and the standard deviations . The statistical question is : Is the difference between the means of the subgroups too great to be attributed to chance variations in the sampling process ? The variation within the ...
... subgroups , the means and the standard deviations . The statistical question is : Is the difference between the means of the subgroups too great to be attributed to chance variations in the sampling process ? The variation within the ...
Contents
Review of Arithmetic and Algebra | 2 |
Frequency Distributions and Graphs | 22 |
Measures of Central Tendency | 34 |
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Basic Statistical Concepts: A Self-Instructional Text Jack I Bradley,James N McClelland No preview available - 2012 |
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a z score ability algebra aptitude test arithmetic arithmetic mean auditory perception test average behavior boys cent centile rank central tendency cluster coefficient of correlation compared correlation coefficient criterion describe descriptive statistics determine deviation scores equal estimate example experiment expression extraneous factors finding the mean finger maze flipped formula frequency distribution frequency polygon girls graph histogram hypothesis hypothetical distribution indicates individual learning mathematics mean score meas measure of central measuring device median milliseconds negative normal curve normal distribution Number of Heads obtained occur operations pair performance predict predictive validity predictor probability probability distribution psychological measuring radicand random sample range raw score relationship reliability coefficient represented result right turns scatter diagram score on test six right skewed standard deviation standard score statistical stratified sampling subgroups subtraction Suppose symbol Table tails tally marks test scores tion toss trials true false validity variance X₁ ΣΧ