Payton collected data to show the relationship between the number of hours he practices

8 answers
Question:

Payton collected data to show the relationship between the number of hours he practices and the number of errors he makes when playing a new piece of music. the table shows his data practice makes better 2 3 4 5 6 7 number of hours number of errors 26 34 30 31 23 16 115 which is the approximate slope of the line of best fit for the data? 55 45 20 -10

Answers

-4.5

Step-by-step explanation:

-4.5

Step-by-step explanation:

We will use a graphing calculator to find the line of best fit and the corresponding regression equation.

First we enter the x values into the first list.  Then we enter the y values into the second list.

We pull up the graph (attached).  Next we calculate the linear regression (screenshot attached).  In the regression, we can see that the slope is -4.5 (rounded to the nearest tenth).


[tex]Payton collected data to show the relationship between the number of hours he practices and the numb[/tex]
[tex]Payton collected data to show the relationship between the number of hours he practices and the numb[/tex]

b

Step-by-step explanation:

Option B.

Step-by-step explanation:

The general equation of best fit line is

[tex]y=ax+b[/tex]

where, a is the slope of best fit line and b is y-intercept.

Using graphing calculator a=-4.54762 and b=43.7143. So equation of best fit line is

[tex]y=-4.54762x+43.7143[/tex]

Here,

[tex]Slope=-4.54762[/tex]

[tex]Slope\approx -4.5[/tex]

Note: In alternate method, you can use the below formula to find slope.

[tex]m=\dfrac{\overline{x}\cdot \overline{y}-\overline{xy}}{(\overline{x})^2-\overline{x^2}}[/tex]

Therefore, the correct option is B.

the answer is B

Step-by-step explanation:

–4.5 or B on ed    just took the quiz good luck with school guys

Step-by-step explanation:

108

what is the answer to this

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