1. Look at the following correlation scatter plot. What type of a correlation is it?
1 answer:
Scatter plot is missing, so i have attached it.
Answer:
C : zero correlation
Step-by-step explanation:
A correlation is said to be negative between two variables when they are related in such a manner that when one variable increases, the other variable decreases and vice versa.
However, a correlation is said to be Positive when one variable increases as the other increases as well and vice versa which means they both move in the same direction.
However, in the image of the scatter plot attached, we see that it is neither positive or negative correlation as there is no clear visible relationship between the variables on the x and y axis.
Thus, we can say there is zero correlation.
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5 jars of jam and 3 packages of bread mix are in gift basket
<em><u>Solution:</u></em>
Let "x" be the number of jars of jam
Let "y" the number of packages of bread mix
Cost of 1 jars of jam = $ 6
Cost of 1 package of bead mix = $ 5
<em><u>There are 8 items in the basket</u></em>
Therefore,
number of jars of jam + number of packages of bread mix = 8
x + y = 8 ---------- eqn 1
<em><u>A gift basket that contains jars of jam and packages of bread mix costs $45</u></em>
Therefore, we frame a equation as:
number of jars of jam x Cost of 1 jars of jam + number of packages of bread mix x Cost of 1 package of bead mix = 45
6x + 5y = 45 --------- eqn 2
<em><u>Let us solve eqn 1 and eqn 2</u></em>
From eqn 1,
x = 8 - y --------- eqn 3
<em><u>Substitute eqn 3 in eqn 2</u></em>
6(8 - y) + 5y = 45
48 - 6y + 5y = 45
y = 48 - 45
<h3>y = 3</h3><em><u>Substitute y = 3 in eqn 3</u></em>
x = 8 - 3
<h3>x = 5</h3>Thus 5 jars of jam and 3 packages of bread mix are in gift basket