Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine Chapter 12: Q. 72 (page 726)
The height (sidewalk to roof) of notable tall buildings in America is compared to the number of stories of the building (beginning at street level).
a. Using 鈥渟tories鈥� as the independent variable and 鈥渉eight鈥� as the dependent variable, make a scatter plot of the data.
b. Does it appear from inspection that there is a relationship between the variables?
c. Calculate the least squares line. Put the equation in the form of: \(\hat{y}=a+bx\)
Short Answer
Part a. While creating scatter plot, consider 鈥渟tories 鈥渁s an independent variable on \(X\) axis and consider 鈥渉eight 鈥渁s a independent variable on \(Y\) axis. The scatter plot is made using the excel sheet.
Part b. From scatter plot we can say that there will be positive linear relationship between heights and stories.
Part c.
Step by step solution
Part a. Step 1. Explanation
While creating scatter plot, consider 鈥渟tories 鈥渁s an independent variable on \(X\) axis and consider 鈥渉eight 鈥渁s a independent variable on \(Y\) axis. The scatter plot is made using the excel sheet.
Part b. Step 1. Explanation
From scatter plot we can say that there will be positive linear relationship between heights and stories.
Part c. Step 1. Explanation
The general least square line is given by,
\(y=a+bx\).....(1)
Here, \(a\) is the \(y\) intercept and \(b\) is the slope.
Here \(y\) is the dependent variable and \(x\) is independent variable.
The least square line is calculated by using above excel sheet.
By using equation (1) the estimated least squares can be written as,
\(y=a+bx\).....(1)
height\(=102.43=11.758\)stories
\(y=102.43+11.758x\)....(2)
Over 30 million students worldwide already upgrade their learning with 91影视!
