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shtirl [24]
3 years ago
14

What is the equation of the line best fit for the following data? Round the slope and y-intercept of the line to three decimal p

laces. X=4,7,10,12,13 y= 5,7,12,14,18

Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
7 0

Answer:

y = 1.383x - 1.526

Step-by-step explanation:

Intercept-    -1.526

Slope-  1.383

Line of best fit- y = 1.383x - 1.526

kari74 [83]3 years ago
4 0

Answer:

y=1.383x-1.526

Step-by-step explanation:

The given data table is

x :        4       7       10       12       13

y :        5       7       12       14       18

We need to find the equation of the best fit line.

The general form of a best fit line is

y=mx+b         .... (1)

where, m is slope and b is y-intercept.

m=\frac{\sum_{i=1}^nx_iy_i-n\overline{x}\overline{y}}{\sum_{i=1}^nx_i^2-n\overline{x}^2}

b=\overline{y}-b\overline{x}

Using the graphing calculator we get

m=1.38321\approx 1.383

b=-1.52555\approx -1.526

Substitute m=1.383 and b=-1.526 in equation (1).

y=1.383x-1.526

Therefore, the equation of best fit line is y=1.383x-1.526.

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The <u>correct answer</u> is:

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Explanation:

The <u>mode </u>is the easiest measure to find of a data set.
The <u>mode </u>of a data set is the data value that appears the most often.  In plot A, there are 3 dots at 10 and 3 dots at 15; this means the modes are 10 and 15.

In plot B, there are 3 dots at 5 and 3 dots at 15; this means the modes are 5 and 15.

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The <u>median </u>of a data set is the middle value.  There are 10 dots in each dot plot; this means the medians will each be between two data points.

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8 0
3 years ago
Do you know The answer for If R is the midpoint of QS, QR =8x - 51 and RS = 3x - 6 find QS
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Answer:

<h2>QS = 42</h2><h2></h2>

Step-by-step explanation:

R is midpoint

|<---------------- QS -------------------->|

Q---------------------R--------------------S

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plugin the value of x=9 into the equation above:

QS = (8(9) - 51) + (3(9) - 6)

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