Which correlation coefficient below is most likely to represented on the graph

Mathematics

2 answers:

guajiro [1.7K]3 years ago

8 0

The points shown are "almost" on a line with positive slope, so the correlation coefficient will be positive and near 1. The best choice is ...
(D) 0.95

Nata [24]3 years ago

5 0

Answer:

The correct option is D.

Step-by-step explanation:

The correlation coefficient represent the relationship between two variables. It is denoted by r and the value of r lies from -1 to 1.

If r=-1 and close to -1, then it represents strong negative correlation.

If -1<r<0 and close to -0.5, then it represents weak negative correlation.

If r=0 and close to 0, then it represents no correlation.

If 0<r<1 and close to 0.5, then it represents weak positive correlation.

If r=1 and close to 1, then it represents strong positive correlation.

From the given graph it is clear than the data represents the strong positive correlation because the data set lie close to the positive strait line. So, the value of r is near to 1.

Option 1, 2 represent the negative correlation and option 3 represents weak positive correlation.

Since 0.95 close to 1, therefore it represents strong positive correlation.

Hence option D is correct.

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For your trouble answering this, you will get 30 points. for all the trouble this may cause.

Gennadij [26K]

Answer:

read below

Step-by-step explanation:

A1: I think D because you have a medium average mix of concentrate that will mix with only 2 more cups than itself, so this would keep it fine. A could also work sooooo.... A or D. i dont know at this point. B COULD be a possible solution but it's 5 vs 9.

A2: C

1 cup of concentrate vs 2 water.... the water will make it MUCH more of a clear color.

Question C: this is more time consuming and I am tired so for you this might be easier if you're not as tired so based on what I'm reading you need to do math for each of the 4 options above, concentrate and water mix, and then divide the total of the 2 types of cups for every option.

Hope Q1 and Q2 helped though!

7 0

3 years ago

Which graph represents the function f (x) = StartFraction 5 minus 5 x squared Over x squared EndFraction? On a coordinate plane,

trapecia [35]

9514 1404 393

Answer:

2. On a coordinate plane, a hyperbola is shown. One curve opens up and to the right in quadrants 1 and 4, and the other curve opens up and to the left in quadrants 2 and 3

Step-by-step explanation:

Technically, the curve is not a hyperbola. A hyperbola is of the form 1/x; this one is of the form 1/x².

The function can be simplified to ...

f(x) = 5/x² -5

which is a "hyperbola" with a vertical asymptote at x=0 and a vertical translation of -5 units to bring parts of it into the 3rd and 4th quadrants.