Use these ordered pairs to help your scatter plot below ( Questions are ordered 1-14) 69,60 41,23 47,38 59,30 43,37 42,47 42,30 38,30 76,80 33,30 68,50 85,87 36,31 61,45 53,47 38,31 34,58 50,44 61,45 53,47 38,31 34,58 50,44 45,35 (X,Y)
Use these ordered pairs to help your scatter plot below ( Questions are ordered 1-14) 69,60 41,23 47,38 59,30 43,37 42,47 42,30 38,30 76,80 33,30 68,50 85,87 36,31 61,45 53,47 38,31 34,58 50,44 61,45 53,47 38,31 34,58 50,44 45,35 (X,Y)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
Use these ordered pairs to help your scatter plot below ( Questions are ordered 1-14)
69,60
41,23
47,38
59,30
43,37
42,47
42,30
38,30
76,80
33,30
68,50
85,87
36,31
61,45
53,47
38,31
34,58
50,44
61,45
53,47
38,31
34,58
50,44
45,35
(X,Y)

Transcribed Image Text:7. You should see a bunch of numbers similar to, but not
the same as, the picture to the right, as well as a new
line of fit on your scatterplot. This is the BEST line of
fit possible! Write down YOUR values for r, m, b (round
to 2 decimals), and the equation for your best line of
fit in y= mx + b form.
r=
m=
b=
8. Look back at #5. What did you guess your correlation (r) was?,
correlation (r) value, was it close to your guess from #5?
₁₁+
12. Enter this in a new row under the "Age Guessing
Table." (see pic), and you should see a new line
appear on your scatter plot.
-0.9009
-0.9492
P
-0.978224
10. Delete your line of fit by clicking the "X" to the right of it (see pic to
the right).
~ y = d
plot
6--1.01319
Y=,
9. Your correlation (r) tells you how consistent your guessing was. A correlation (r) close to O means you
are very inconsistent, but a correlation (r) close to 1 means you're very consistent! How would you
rate your consistency?
Now that you know the real
X*.
7₁ -mx-b
~--0000
11. Someone who is perfect at guessing ages and guessed every celebrity exactly correct would create
the perfectly straight line y = X. Why? Think about what y & x represent in terms of actual ages
and guessed ages.
5--108319
13. The closer your data is to the line y = X, the more accurate guesser you are! How would you rate
your accuracy?
As time allows....
14. Remember, a residual represents the distance between what actually happened (the dot) and the line
of fit. Which celebrity did you have the biggest residual (was furthest from the "perfect" line of
y = x)? How far off were you?

Transcribed Image Text:A
1
41
1. Open up an internet browser and go to the following URL: http://bit.ly/2e4wt65.
+
2. On the left side of the screen, find the tab that says "Age
Guessing Table." Click under the x column and type in your
ACTUAL AGES, Under the y column, enter your GUESSES.
Everyone should have the same x column (actual ages), but your
y column (guesses) will look different from your neighbor. See
the picture to the right.
3. As you type in pairs of numbers in the x and y columns, dots
should start appearing in your graph. When you are finished, you
should have a total of 19 dots in your scatterplot.
6. Let's find your line of best fit.
● Click the "X" to the right of "Trend Line" (see
picture), and it will disappear (see pic to the right).
• Go back to the top of your "Age Guessing Table."
Click next to the x and y in the columns, and add a 1,
after the x and y (see pic to the right).
y
1
●
2²
7
4
1
0
4
5
4. Take a look at your scatter plot. Does it have a positive, negative, or no correlation (r)? How do you
know?
Positive/Negative/No (circle one) correlation becauses 90100 00
5. Looking at your scatterplot, do you think r is close to -1, -0.5, 0, 0.5, or 1? How do you know?
r is close to -1/-0.5 /0/0.5/1 (circle one) because M
2
mx1 + b. Note the
Click a new row under the table and type exactly: y1
"~" can be found by clicking the "ABC" button on the keyboard that appears,
and then selecting it (see pictures below)
9
6
3
-
functions
34
L
y. -mx, + b
Af
"Al
4
d
↑
125
N
1
2
Trend Line
d
y' = mx + b
M = 1
T
Age Guessing Table
1
(
r
X
65
1
NT
gª
M
ty
C
y
Gr
h
401
32
M41
<
X1
65
37
Actual Ages
43
U
1
A
1
Guesses
K
M
y
60
O
40
32
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 2 images

Recommended textbooks for you

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON

The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman

Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman