(b) Use the method of least squares to determine the linear trend line for the following data. Also compute the trend values and make an estimate of the number of bags of fertilizer sold in the 1st and 2nd quarters of 1999. Quarters Years II II IV 1995 1996 72 98 79 106 79 122 101 143 1997' 94 141 128 135 160 1998 125 143 187

(b) Use the method of least squares to determine the linear trend line for the following data. Also compute the trend values and make an estimate of the number of bags of fertilizer sold in the 1st and 2nd quarters of 1999. Quarters Years II II IV 1995 1996 72 98 79 106 79 122 101 143 1997' 94 141 128 135 160 1998 125 143 187

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

the least squares method from
the following data. Plot the actual values and the linear
trend on same graph.
Years
Price in Rs. 3
Use the method of least squares to determine the linear
trend line for the following data. Also compute the trend
values and make an estimate of the nuniber of bags of
fertilizer sold in the 1st and 2nd quarters of 1999.
1995 1996|1997|1998|1999|2000 200120022003
6
2
10
7
9.
14 12 18
(b)
Quarters
Years
II
III
IV
1995
72
98
79
106
1996
79
122
101
143
1997'
94
141
128
160
1998
125
143
135
187

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