FIGURE 10-1Tpes of RelationshipsSection 10-1 Correlation541(a) Positive linear relationship(b) Negative linear relationshipbetio inomeo t•• ech(c) Curvilinear relationship(d) No relationshippressure, the researcher can generally assume that age affects blood pressure. Hence, thevariable age can be called the independent variable, and the variable blood pressure can becalled the dependent variable. On the other hand, if a researcher is studying the attitudes ofhusbands on a certain issue and the attitudes of their wives on the same issue, it is difficultto say which variable is the independent variable and which is the dependent variable. In thisstudy, the researcher can arbitrarily designate the variables as independent and dependent.The independent and dependent variables can be plotted on a graph called a scatterplot. The independent variable x is plotted on the horizontal axis, and the dependent vari-abie pletted on the vertical axis.da dgng sdt no nioq dono sol9A scatter plot is a graph of the ordered pairs (x, y) of numbers consisting of theindependent variable x and the dependent variable y.The scatter plot is a visual way to describe the nature of the relationship between theindependent and dependent variables. The scales of the variables can be different, andthe coordinates of the axes are determined by the smallest and largest data values of thevariables.Researchers look for various types of patterns in scatter plots. For example, in Fig-ure 10–1(a), the pattern in the points of the scatter plot shows a positive linear relation-ship, Here, as the values of the independent variable (x variable) increase, the values ofthe dependent variable (y variable) increase. Also, the points form somewhat of a straightline going in an upward direction from left to right.The pattern of the points of the scatter plot shown in Figure 10–1(b) shows a negativelinear relationship. In this case, as the values of the independent variable increase, thevalues of the dependent variable decrease. Also, the points show a somewhat straight linegoing in a downward direction from left to right.The pattern of the points of the scatter plot shown in Figure 10–1(c) shows some typeof a nonlinear relationship or a curvilinear relationship.Finally, the scatter plot shown in Figure 10-1(d) shows basically no relationshinbetween the independent variable and the dependent variable since no pattern (line orcurve) can be seen.10-3 What seems to be true about the figures at the top of thepage ?Page 541а.When there is no relationship, the points arewidely scatteredb.The pattern of the points can slope from left toright and from right to leftNeither statement is trueC.d.Both are true

We have given 4 figures on the top of page and by observing them we have to select correct option.

Answered: Correlation (a) Positive linear…

Correlation (a) Positive linear relationship (b) Negative linear relationship 2oin (c) Curvilinear relationship (d) No relationship

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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