| pullstrength {qqtest} | R Documentation |
Strength of pull for 519 males aged 23-26.
Description
From measurements made by Francis Galton at the International Health Exhibition in 1884.
Usage
pullstrength
Format
A data frame with 7 rows and 4 variates:
- strength
Pull strength lower bound in pounds.
- nCases
Number of cases observed with pull strength between this bound and the next.
- percentCases
Percent of cases observed with pull strength between this bound and the next.
- percentCumulative
Cumulative percent of cases observed with pull strength up to this bound.
- percentAdjustedCumulative
Adjust Galton's cumulative percent to include only half the cases between this bound and the next.
Details
qqtest(pullstrength$strength, p=pullstrength$percentCumulative/100, np=519, dist="uniform", main="Galton's ogive of pull strength for 519 males aged 23-26", xlab="Cumulative Proportions (Adjusted)",yAxisAsProbs=FALSE, ylab="Strength in lbs.", type="o") will effect Galton's Ogive.
qqtest(pullstrength$strength, p=pullstrength$percentAdjustedCumulative/100, np=519, dist="normal", main="Gaussian qqplot of pull strength for 519 males aged 23-26", xlab="Cumulative Proportions (Adjusted)",yAxisAsProbs=FALSE, ylab="Strength in lbs.", type="o") will effect a normal qqplot for this data.
Source
"Natural Inheritance", Francis Galton, (1889), Table 1, page 199.