General
PromptBeginner5 minmarkdown
median = median(x
na.rm = TRUE)
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General
PromptBeginner5 minmarkdown
mean = mean(x
na.rm = TRUE)
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General
PromptBeginner5 minmarkdown
round(sapply(df[num_cols]
function(x) c(
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General
PromptBeginner5 minmarkdown
sd = sd(x
na.rm = TRUE)
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General
PromptBeginner5 minmarkdown
# df <- df[df$year >= 2010
]
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General
PromptBeginner5 minmarkdown
num_cols <- names(df)[sapply(df
is.numeric)]
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General
PromptBeginner5 minmarkdown
# df <- df[complete.cases(df[
c(outcome
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General
PromptBeginner5 minmarkdown
# breaks = c(0
25
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General
PromptBeginner5 minmarkdown
# labels = c(18-25
26-45
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General
PromptBeginner5 minmarkdown
# df$gender <- ifelse(df$gender == 1
Male
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General
PromptBeginner5 minmarkdown
# df$date <- as.Date(df$date
format = %Y-%m-%d)
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General
PromptBeginner5 minmarkdown
cat(sprintf(\n%s (%d unique):\n
col
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General
PromptBeginner5 minmarkdown
print(table(df[[col]]
useNA = ifany))
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General
PromptBeginner5 minmarkdown
cat_cols <- names(df)[sapply(df
function(x) is.character(x) | is.factor(x))]
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General
PromptBeginner5 minmarkdown
print(na_report[na_report$n_miss > 0
])
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General
PromptBeginner5 minmarkdown
cat(sprintf(Duplicate rows: %d\n
n_dup))
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General
PromptBeginner5 minmarkdown
head(df
10)
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General
PromptBeginner5 minmarkdown
pct_miss = round(colMeans(is.na(df)) * 100
1)
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General
PromptBeginner5 minmarkdown
# library(car) # Type II/III ANOVA
VIF
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General
PromptBeginner5 minmarkdown
# library(lmtest) # Breusch-Pagan
Durbin-Watson etc.
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General
PromptBeginner5 minmarkdown
# Copy this file
rename it
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General
PromptBeginner5 minmarkdown
- `hcl(h
c
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General
PromptBeginner5 minmarkdown
- `colorRamp` returns a **function** mapping [0
1] to RGB matrix.
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General
PromptBeginner5 minmarkdown
- `adjustcolor(col
alpha.f = 0.5)`: easy way to add transparency.
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