table or two-dimensional array-like structure in which each column contains values of one variable and each row contains one set of values from each column is also called a _____________     Matrix     List     Vector     Data frame

COMPREHENSIVE MICROSOFT OFFICE 365 EXCE
1st Edition
ISBN:9780357392676
Author:FREUND, Steven
Publisher:FREUND, Steven
Chapter2: Formulas, Functions, And Formatting
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A table or two-dimensional array-like structure in which each column contains values of one variable and each row contains one set of values from each column is also called a _____________

   

Matrix

   

List

   

Vector

   

Data frame

 

What is the range of sepal lengths in the iris dataset? (Hint: you will need to use the range() function for this question. It will provide you two numbers - the largest and the smallest values in the group. To find the range, can subtract the smallest value from the largest value in the console). Start by entering range(iris$Sepal.Length) into the console.

   

17.1

   

8.2

   

0.865

   

3.6

In your R console, type in the following code:

> plot(cars$dist~cars$speed, ylab = "Braking Distances, in Feet")

Which of the following statements accurately describes the result shown in your Miscellaneous Pane?

   

The graph is a histogram that shows the relative frequencies of various braking distances.

   

The graph has a label on the y-axis that reads Braking Distances, in Feet .

   

The graph shows signs of auto-correlation reduction.

   

The graph has a label on the x-axis that describes the overall purpose of the plot.

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