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paired samples, defined, 218
paired t-test, 218
box-and-whisker plots, 219, 222
means plots, 219, 223
partial correlation, principal components, 359
Pearson correlations, 184
pie charts
colors, 131
creating, 128
fonts, 131
frequency, 129
labels, 130
line width, 131
number of slices, 129
percent, 129
slice values, 129
three-dimensional, 128
titles, 134
two-dimensional, 128
variables, 134
point display, 94
power analysis, defined, 292
power calculations, 327
confidence intervals, 333, 348
details, 346
equivalence tests, 339, 350
hypothesis tests, 329, 333, 346
one-way ANOVA, 343, 345, 348
precision, defined, 334
power of a test, defined, 327
principal components, 23, 357, 358
component plots, 360, 364
eigenvalues, eigenvectors, 359, 363
partial correlation, 359
scree plots, 359, 364
the covariance matrix, 359
printing
code results, 78
graphs, 78
results, 78
probability plots, 184
project tree, size of, 89
projects, 12
creating, 69
deleting, 73
deleting nodes, 72
folder, 13
node, 14, 16
opening, 73
renaming, 71
saving, 70
saving under another name, 71
tree, 12
proportional hazards regression, 23, 380, 388, 390
model selection techniques, 380
Protein data set, 358
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