s = select.books() which needs to be proceeded byfetchData("simulate.r")
## Retrieving from http://www.mosaic-web.org/go/datasets/simulate.r
## [1] TRUE
(from Monday)
mean, variance, and standard deviation
other measures (e.g., IQR, median, 95% coverage)
In-class activity on the properties of the various measures.
ks = fetchData("/Users/kaplan/Dropbox/Stat155Fall2012/knowledge-survey-2012-09-11.csv")
## Complete file name given. No searching necessary.
for (item in levels(ks$ProblemItem)) {
print(item)
print(tally(~as.character(AnswerContents), data = subset(ks, ProblemItem ==
item)))
print("")
}
## [1] "ANCOVA"
##
## None Some Total
## 48 16 64
## [1] ""
## [1] "ANOVA"
##
## Complete None Some Total
## 1 32 31 64
## [1] ""
## [1] "DF"
##
## Complete None Some Total
## 3 33 27 63
## [1] ""
## [1] "Ftest"
##
## None Some Total
## 60 3 63
## [1] ""
## [1] "Hnull"
##
## Complete None Some Total
## 22 20 20 62
## [1] ""
## [1] "LA"
##
## 10-12 4-6 6-9 AP\n course College
## 14 5 14 1 11
## Never Total
## 19 64
## [1] ""
## [1] "LSQ"
##
## Complete None Some Total
## 9 35 19 63
## [1] ""
## [1] "TypeI"
##
## Complete None Some Total
## 2 44 17 63
## [1] ""
## [1] "algebra"
##
## 10-12 AP\n course College Never Total
## 7 1 35 21 64
## [1] ""
## [1] "bayes"
##
## Complete None Some Total
## 4 47 12 63
## [1] ""
## [1] "boot"
##
## None Some Total
## 61 2 63
## [1] ""
## [1] "bwplot"
##
## 10-12 4-6 6-9 AP\n course College
## 9 15 23 4 2
## Never Total
## 11 64
## [1] ""
## [1] "calc"
##
## 10-12 4-6 6-9 AP\n course College
## 20 3 31 4 1
## Never Total
## 4 63
## [1] ""
## [1] "coll"
##
## Complete None Some Total
## 1 46 15 62
## [1] ""
## [1] "cond"
##
## Complete None Some Total
## 1 50 12 63
## [1] ""
## [1] "confI"
##
## Complete None Some Total
## 7 35 20 62
## [1] ""
## [1] "cprob"
##
## 10-12 4-6 6-9 AP\n course College
## 19 3 9 4 1
## Never Total
## 28 64
## [1] ""
## [1] "cumu"
##
## Complete None Some Total
## 3 44 16 63
## [1] ""
## [1] "dummy"
##
## Complete None Some Total
## 1 46 16 63
## [1] ""
## [1] "excel"
##
## 10-12 4-6 6-9 AP\n course College
## 20 1 19 2 12
## Never Total
## 10 64
## [1] ""
## [1] "exp"
##
## Complete None Some Total
## 20 12 30 62
## [1] ""
## [1] "hist"
##
## 1-3 10-12 4-6 6-9 AP\n course
## 3 12 15 20 3
## College Never Total
## 1 10 64
## [1] ""
## [1] "intrct"
##
## Complete None Some Total
## 1 48 14 63
## [1] ""
## [1] "lincomb"
##
## Complete None Some Total
## 11 35 17 63
## [1] ""
## [1] "logist"
##
## None Some Total
## 50 13 63
## [1] ""
## [1] "lreg"
##
## Complete None Some Total
## 18 20 26 64
## [1] ""
## [1] "mTerm"
##
## Complete None Some Total
## 1 50 12 63
## [1] ""
## [1] "main"
##
## Complete None Some Total
## 1 48 13 62
## [1] ""
## [1] "mmm"
##
## 1-3 10-12 4-6 6-9 College Never Total
## 7 1 33 14 1 2 58
## [1] ""
## [1] "normal"
##
## 10-12 6-9 AP\n course College Never
## 29 14 6 7 8
## Total
## 64
## [1] ""
## [1] "ortho"
##
## Complete None Some Total
## 9 40 13 62
## [1] ""
## [1] "out"
##
## Complete None Some Total
## 45 5 14 64
## [1] ""
## [1] "pVal"
##
## Complete None Some Total
## 12 26 26 64
## [1] ""
## [1] "perc"
##
## Complete None Some Total
## 39 1 24 64
## [1] ""
## [1] "prob"
##
## 1-3 10-12 4-6 6-9 AP\n course
## 5 26 13 17 1
## College Never Total
## 1 1 64
## [1] ""
## [1] "program"
##
## 6-9 AP\n course College Never Total
## 1 1 24 38 64
## [1] ""
## [1] "rand"
##
## Complete None Some Total
## 15 24 24 63
## [1] ""
## [1] "rank"
##
## None Some Total
## 57 6 63
## [1] ""
## [1] "rcoef"
##
## Complete None Some Total
## 11 17 36 64
## [1] ""
## [1] "regres"
##
## 10-12 6-9 AP\n course College Never
## 21 6 7 13 17
## Total
## 64
## [1] ""
## [1] "resid1"
##
## Complete None Some Total
## 9 24 30 63
## [1] ""
## [1] "sResid"
##
## Complete None Some Total
## 6 39 18 63
## [1] ""
## [1] "sampD"
##
## Complete None Some Total
## 5 25 33 63
## [1] ""
## [1] "scatter"
##
## 10-12 4-6 6-9 AP\n course College
## 11 18 26 3 3
## Never Total
## 3 64
## [1] ""
## [1] "sd"
##
## 10-12 6-9 College Complete None Some Total
## 2 1 1 30 6 24 64
## [1] ""
## [1] "sig"
##
## Complete None Some Total
## 8 36 19 63
## [1] ""
## [1] "skew"
##
## Complete None Some Total
## 7 34 22 63
## [1] ""
## [1] "subsp"
##
## Complete None Some Total
## 8 31 24 63
## [1] ""
## [1] "t"
##
## 1-3 10-12 6-9 AP\n course College
## 1 11 1 9 13
## Never Total
## 29 64
## [1] ""
## [1] "tTest"
##
## Complete None Some Total
## 4 32 28 64
## [1] ""