\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Courses
About
Login
Register
C
⌫
\(\pi\)
e
\(\frac{a}{b}\)
!
←
→
(
)
\(\sqrt{\,}\)
\(a^{b}\)
7
8
9
\(\div\)
log
ln
4
5
6
\(\times\)
cos
cos⁻¹
1
2
3
-
sin
sin⁻¹
0
.
=
+
tan
tan⁻¹
A real estate agent records the living area (\(x\)) in square meters (\(m^2\)) and the selling price (\(y\)) in thousands of dollars of 6 recently sold apartments in a neighborhood.
Area (\(x\))
60
75
90
110
130
150
Price (\(y\))
180
220
250
310
350
410
Write down the equation of the regression line of \(y\) on \(x\) in the form \(y = ax + b\) using a calculator.
Interpret the value of \(a\) in the context of the problem.
Calculate the coefficient of determination, \(r^2\), and explain what it indicates.
Estimate the selling price of an apartment with an area of \(100 \text{ m}^2\).
Comment on the validity of using this model to estimate the price of a castle with an area of \(1000 \text{ m}^2\).
Capture an image of your work. AI teacher feedback takes approximately 10 seconds.
Exit