Intro to data science

Front

Which code should work to make a histogram? Options: histogram(~gender,data=cdc), Histogram(~gender, data = cdc), histogram(~gender,data=cdc), histogram(gender,data=cdc)

Back

histogram(~gender,data=cdc)

Front

What is the code to display the count of your variable?

Back

tally (~sugar, data = food)

Front

Which graph is better for CATEGORICAL VARIABLE? Options: bargraph, histogram, scatterplot, dotPlot

Back

bargraph

Front

When you load a data in RStudio, in which section it pops up? Options: File, Environment, Viewer, History

Back

Environment

Front

What does the following code display?
dim (cdc)
Options: Number of rows, Number of Columns, The Variables, Both the number of rows and Columns

Back

Both the number of rows and Columns

Front

Which code tells us if a variable is numerical or categorical? Options: data(file), str(file), View(file), names(file)

Back

str(file)

Front

Which one is the code to make a dotplot? Options: dotplot(~variable, data = file), Dotplot(~variable, data = file), dotPlot(~variable, data = file), DotPlot(~variable, data = file)

Back

dotPlot(~variable, data = file)

Front

Which symbol do we use to split the graph? Options: /, ~, |, \,

Back

|

Front

What are the 3 steps of getting our survey data into RStudio?

Back

Export, Upload, Import

Front

Which code does not produce a proper graph? Options: histogram(~height,data=cdc), bargraph(~gender,data=cdc), xyplot(~height,data=cdc), dotPlot(~healthy_level,data=food)

Back

xyplot(~height,data=cdc)