More points

1
More points
Multiple figures par(mfcolc(3,2) par
(mfrow)c(3,2)
2
Practice R graph

• Data
• ChickWeight
• plot the data into 22 matrix
• Each graph x-label, y-label, title, legend
• Each has different color, type (point, line)
• try to display different styles as more as
  possible.
• shown your own style, save as jpg file
• Orange
• plot age circumference by tree into one
  image. (title), save as pdf file

3
Practice R graph
Generate a normal distribution , sample
size100 ylt-rnorm(100) qqnorm(y, mainNormal
random variable) qqline(y, col, lwd)
Generate a non normal distribution , sample
size100 ylt-rnorm(100)2 qqnorm(y, mainNon
normal random variable) qqline(y, col, lwd)
Put them into one png image
4
Contents (group work)

• R basics
• R graph (Group8)
• Descriptive statistics and data displaying
  (Group3)
• T-test, ANOVA (Group 7)
• Practice outside of class
• Linear regression correlation(Group4)
• Chi-squared test (Group 6)
• Logistic regression (Group1)
• Survival analysis (Group 9)
• Non-parameter tests (Group2)