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To create a scatterplot in base R with points depending on categorical column, we can follow the below steps −First of all, create a data frame.Then, use plot function to create the scatterplot with col argument and using categorical column with factor function.Create the data frameLet's create a data frame as shown below − Live Demox
To create two horizontal lines with different color after a threshold in R, we can follow the below steps −First of all, create a plot in base R.Then, add a line to the plot using abline function.After that, use segments function to partially change the color of the line.Create the plotUsing plot function to create a plot in base R − Live Demoplot(1:5, 1:5, xlim=c(0, 5))OutputAdd a line to the plotUsing abline function to add a line to the plot − Live Demoplot(1:5, 1:5, xlim=c(0, 5)) abline(h=3)OutputPartially color the lineUsing segments function to color the with yellow color starting from 0 to ... Read More
To limit the length of regression line using ggplot2 in R, we can follow the below steps −First of all, create a data frame.Then, create the scatterplot using ggplot2 with regression line.After that, create the scatterplot with regression and add xlim function.Create the data frameLet's create a data frame as shown below − Live Demox
To add regression residuals to data frame in R, we can follow the below steps −First of all, create a data frame.Then, use lm function to create the regression model and find the residuals using resid function and adding them to the data frame with $ operator.Create the data frameLet's create a data frame as shown below − Live Demox
To divide the row values by number of columns in R’s data.table object, we can follow the below steps −First of all, create a data.table object.Then, use apply function to divide the data.table object row values by number of columns.Create the data frameLet's create a data frame as shown below −library(data.table) x
To extract the p-value from t test in R, we can follow the below steps −First of all, create a data frame with numerical column or a numerical vector.Then, use t.test function to perform the test and put $p.value at the end to extract the p-value from the test output.Example1Create the data frameLet's create a data frame as shown below − Live Demox
To create a subset of an R data frame based on multiple columns, we can follow the below steps −First of all, create a data frame.Then, use single square brackets to subset the data frame based on multiple columns.Create the data frameLet's create a data frame as shown below − Live Demox1
To check if a character column only contains alphabets in R data frame, we can follow the below steps −First of all, create a data frame with a character column.Then, use grepl function to check if all the values in the column contains only alphabets.Example 1Let's create a data frame as shown below − Live Demox
To find the proportion using normal distribution in R, we can use pnorm function where we can provide the mean and standard deviation of population along with sample, also the tail position can be set by using lower.tail argument to TRUE or FALSE. Check out the below examples to understand how it can be done.Example 1Finding the proportion of values above 55 when sample mean is 50 and standard deviation is 8 − Live Demopnorm(55, mean=50, sd=8, lower.tail=FALSE)Output[1] 0.2659855Example 2Finding the proportion of values above 60 when sample mean is 50 and standard deviation is 8 − Live Demopnorm(60, mean=50, sd=8, lower.tail=FALSE)Output[1] ... Read More
To find the frequency of continuously repeated string values in an R data frame column, we can follow the below steps −First of all, create a data frame with a string column.Then, use sequence function and rleid function after converting the data frame into data.table object to find the frequency of continuously repeated string values in data frame column.Create the data frameLet's create a data frame as shown below − Live Demox