All categories

3 years ago

Use a calculator to find the r-value of these data. Round the value three decimal places.

Mathematics

2 answers:

Soloha48 [4]3 years ago

8 0

Answer:

Option C. $r=-0.901$

Step-by-step explanation:

we know that

Using a Excel tool (Correl function)

see the attached table

The r-value is $r=-0.901$

Dmitry_Shevchenko [17]3 years ago

8 0

Answer:

Step-by-step explanation:

-0.901

You might be interested in

Determine the slope and the y-intercept <br><br> 6y+x=6<br> Answer:

pishuonlain [190]

I think y=0 because 6 multiple by 0 is 0 then x= 6 hope this helps might want to check my work to

6 0

3 years ago

Read 2 more answers

A right triangle has a hypotenuse C=12cm and a an angle A= 30°. find the length of side a, witch is opposite angle A

Alisiya [41]

Use the sin identity to find that side. Sin(30) = a/12...12 sin(30) = a, and a = 6

7 0

4 years ago

Plz help asap<br> thanks xoxoxoxoxox

Leona [35]

I cannot see a pictureesss

7 0

3 years ago

Read 2 more answers

How many groups of ten are there in 230?

Artyom0805 [142]

Answer:

I am pretty sure the answer is 23

Step-by-step explanation:

The answer is 23 because if you multiply 23 by 10 you get 230 which is the same if you divided 230 by 10 and you get 23.

4 0

3 years ago

An analyst must decide between two different forecasting techniques for weekly sales of roller blades: a linear trend equation a

Amiraneli [1.4K]

Answer:

Following are the responses to the given question:

Step-by-step explanation:

Mean Absolute Deviation MAD

$MAD = \sum_{i=1}^{n} \frac{\left | actual_{i}-forecast_{i} \right |}{n}$

Mean squared error

$MSE=\Sigma^{n}_{i=1} \frac{(Actual_i - Forecast_i)^2}{(n - 1)}$

linear trend equation is $Ft = 124 + 2t$

$MAD = \frac{23}{10} = 2.3\\\\MSE = \frac{91}{9}= 10.11\\\\$

Naive method

$MAD = \frac{36}{9} = 4\\\\MSE = \frac{202}{8}=25.25\\\\MAD (Naive) = 4\\\\MAD (Linear) =2.3\\\\MSE (Naive)=25.25\\\\MSE (Linear)=10.11\\\\$

Please find the attached file.

7 0

3 years ago

Use a calculator to find the r-value of these data. Round the value three decimal places.​

Use a calculator to find the r-value of these data. Round the value three decimal places.