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In order to examine whether the items selected for the study had a particular effect on children's teleological explanations, we conducted McNemar tests for each pair of items (feet of organisms, artifacts, and natural objects), for each feature separately.
Choice patterns recorded for each pair of items X and Y are expressed as a function of log qY / qX), where qX and qY are, respectively, the quantities of items X and Y offered to the monkey.
The use of polychoric correlations required underlying bivariate normality for each pair of items [ 32].
Average inter-item correlation is a subtype of internal consistency reliability, obtained by taking all of the items on a test that test the same construct, determining the correlation coefficient for each pair of items, and finally taking the average of all of these correlation coefficients.
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Next we determined sensitivity, specificity, positive predictive value, negative predictive value for each item, for each pair of item and for the items 1 + 2 + 4. The third question about the onset and duration of the drug intake was clearly not discriminating enough: 90.5% of patients have answered yes to the third question, that's why item 3 has been marked out.
To incrementally update S we also maintain a frequency matrix F with the number of items corated by each pair of users (user-based) or the number of users that corated each pair of items (item-based).
Discriminant validity for items was tested using item correlation, which showed that there were no redundant items, as correlations between each pair of items were less than 0.85.
Next, to explore the proportions of students' responses for each pair of matched items, we performed Chi squared tests of homogeneity.
For each pair of data items, the Altman Bland plot compares the difference between the two measurements with the mean of those measurements.
As validity indicators, we calculated sensitivity, specificity and the positive and negative predictive values for each pair, trio of item and for the 4 items.
A query script asks for (a) each pair of players that are linked through an intercepted phone call, (b) how many phones, and/or cars, and/or guns each player has, and (c) for each pair of players, the number of evidence items that mention both of them.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com