How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the average weight of the pony (in kilograms). 12 140 15 162 21 189 60 95 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. Fill 140 120 No Bolution 100 Help WebAssign. Graphing Tool (b) Would you say the correlation is low, moderate, or strong? o low O moderate O strong Would you say the correlation is positive or negative? O positive O negative (c) Use a calculator to verify that x = 57, Ex² = 855, Ey = 646, Ev² = 94,190, and xy = 8,829. Compute r. (Round your answer to three decimal places.) As x increases from 3 to 21 months, does the value of r imply that y should tend to increase or decrease? Explain your answer. O Given our value of r, y should tend to increase as x increases. O Given our value of r, y should tend to decrease as x increases. O Given our value of r, we can not draw any conclusions for the behavior of y as x increases. O Given our value of r, y should tend to remain constant as x increases.

How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the average weight of the pony (in kilograms). 12 140 15 162 21 189 60 95 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. Fill 140 120 No Bolution 100 Help WebAssign. Graphing Tool (b) Would you say the correlation is low, moderate, or strong? o low O moderate O strong Would you say the correlation is positive or negative? O positive O negative (c) Use a calculator to verify that x = 57, Ex² = 855, Ey = 646, Ev² = 94,190, and xy = 8,829. Compute r. (Round your answer to three decimal places.) As x increases from 3 to 21 months, does the value of r imply that y should tend to increase or decrease? Explain your answer. O Given our value of r, y should tend to increase as x increases. O Given our value of r, y should tend to decrease as x increases. O Given our value of r, we can not draw any conclusions for the behavior of y as x increases. O Given our value of r, y should tend to remain constant as x increases.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.

Question

How much should a healthy Shetland pony weigh? Let x be the age of the
pony (in months), and let y be the average weight of the pony (in
kilograms).
12
140
15
162
21
189
60
95
(a) Make a scatter diagram of the data and visualize the line you think
best fits the data.
Graph Layers
After you add an object to the graph you
can use Graph Layers to view and edit its
properties.
Fill
140
120
No
Bolution
100
Help
WebAssign. Graphing Tool
(b) Would you say the correlation is low, moderate, or strong?
o low
O moderate
O strong
Would you say the correlation is positive or negative?
O positive
O negative
(c) Use a calculator to verify that x = 57, Ex² = 855, Ey = 646, Ev² = 94,190,
and xy = 8,829.
Compute r. (Round your answer to three decimal places.)
As x increases from 3 to 21 months, does the value of r imply that y
should tend to increase or decrease? Explain your answer.
O Given our value of r, y should tend to increase as x increases.
O Given our value of r, y should tend to decrease as x increases.
O Given our value of r, we can not draw any conclusions for the
behavior of y as x increases.
O Given our value of r, y should tend to remain constant as x
increases.

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