自动绘图：点垂直对齐，不满足假设？

编程问答 2022-08-23

问题描述

我正在查看性别之间的反应时间（计数数据）差异。但是我的假设确实有一些问题，因为我的自动绘图输出看起来很奇怪，而且我不太了解这是怎么回事。

[自动绘图] [1]

  1. 为什么我的Q-Q图看起来像楼梯？
  2. 为什么其他三个图看起来像这样（所有点在两个位置垂直对齐）？如果看起来像这样，我无法检查这些假设？

这里是数据https://docs.google.com/spreadsheets/d/e/2PACX-1vQFgYX1QhF9-UXep22XmPow1ZK5nbFHix9nkQIa0DzqUhPtZRxH1HtY-hsno32zDiuIHiLb2Hvphk1L/pub?output=csv

的链接

我的代码：

library(tidyverse)
library(ggplot2)
library(dplyr)
library(ggfortify)
library(tidyr)

rt <- read.csv(URL)

#rename
names(rt) <- c("Timestamp","ID","Gender","Pref_Reaction_time_1","Verbal_memory_score","Number_memory_score","Visual_memory_score","Weight_kgs","Handed","Nonpref_Reaction_time_ave","Pref_Reaction_time_2","Pref_Reaction_time_3","Pref_Reaction_time_4","Pref_Reaction_time_5","Pref_Reaction_time","Random_number")

#select only needed variables
rt <- dplyr::select(rt,ID,Gender,Verbal_memory_score,Number_memory_score,Visual_memory_score)



## Number Memory
#have a look at variable
ggplot(rt,aes(x=Number_memory_score)) +geom_histogram()

#filter out the weird data
rt2 <- filter(rt,Number_memory_score <25)

#check how it looks
ggplot(rt2,aes(x=Number_memory_score)) +geom_histogram(bins=10)

#does there seem to be a relationship btw the variables
ggplot (rt2,aes (x = Number_memory_score)) + geom_histogram () + facet_wrap (~Gender)

ggplot(rt2,aes(x=Gender,y=Number_memory_score))+ geom_point()+ geom_Boxplot() +ggtitle("Number")
    #tiny difference


#create model
m_number <- glm(Number_memory_score ~ Gender,data=rt2,family=quasipoisson)

#check assumptions and output
autoplot(m_number) #looks weird
anova(m_number,test="F")
summary(m_number)
  #very small part explained by gender


  [1]: https://i.stack.imgur.com/5Kp2g.png

解决方法

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glmpoissonrr