Homework 4

library(tidyverse)

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library(readxl)
library(pastecs)

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##     extract

district<-read_excel("district.xls")

pastecs::stat.desc(district$DPSTURNR)

##      nbr.val     nbr.null       nbr.na          min          max        range 
## 1.200000e+03 1.200000e+01 7.000000e+00 0.000000e+00 1.000000e+02 1.000000e+02 
##          sum       median         mean      SE.mean CI.mean.0.95          var 
## 2.580620e+04 1.950000e+01 2.150517e+01 3.166699e-01 6.212887e-01 1.203358e+02 
##      std.dev     coef.var 
## 1.096977e+01 5.100991e-01

Variable is teacher turnover. We have the median, mean, standard deviation and variance.

district_clean<-district |> drop_na(DPSTURNR) %>%filter(DPSTURNR>0)

hist(district_clean$DPSTURNR)

district_clean<-district_clean %>% mutate(DPSTURNR_SQRT=sqrt(DPSTURNR))

hist(district_clean$DPSTURNR_SQRT)