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MArishka [77]
2 years ago
12

The difference between 6 digits smallest number and 4 digits greatest number is ​

Mathematics
1 answer:
oee [108]2 years ago
5 0

Answer:

12

Step-by-step explanation:

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A professor went to a website for rating professors and looked up the quality rating and also the "easiness" of the six full-tim
Marat540 [252]

We are asked to determine the correlation factor "r" of the given table. To do that we will first label the column for "Quality" as "x" and the column for "Easiness" as "y". Like this:

Now, we create another column with the product of "x" and "y". Like this:

Now, we will add another column with the squares of the values of "x". Like this:

Now, we add another column with the squares of the values of "y":

Now, we sum the values on each of the columns:

Now, to get the correlation factor we use the following formula:

r=\frac{n\Sigma xy-\Sigma x\Sigma y}{\sqrt{(n\Sigma x^2-(\Sigma x)^2)(n\Sigma y^2-(\Sigma y)^2)}}

Where:

\begin{gathered} \Sigma xy=\text{ sum of the column of xy} \\ \Sigma x=\text{ sum of the column x} \\ \Sigma y=\text{ sum of the column y} \\ \Sigma x^2=\text{ sum of the column x\textasciicircum2} \\ \Sigma y^2=\text{ sum of the column y\textasciicircum2} \\ n=\text{ number of rows} \end{gathered}

Now we substitute the values, we get:

r=\frac{\left(6)(70.56)-(25.2)(16.4\right)}{\sqrt{((6)(107.12)-(25.2)^2)((6)(47.82)-(16.4)^2)}}

Solving the operations:

r=0.858

Therefore, the correlation factor is 0.858. If the correlation factor approaches the values of +1, this means that there is a strong linear correlation between the variables "x" and "y" and this correlation tends to be with a positive slope.

7 0
1 year ago
1. Which of the following is not an equation?
OlgaM077 [116]

Answer:

2. is not an equation

Step-by-step explanation:

An equation always has an equal sign. An expression doesn't

5 0
2 years ago
Please help me and I’ll give you brainiest!!!!!!!!!
dsp73

<u><em>Answer:</em></u>

<u><em>S L O P E</em></u>

<u><em>Explain:</em></u>

<u><em>S L O P E</em></u>

4 0
3 years ago
Read 2 more answers
The measures of three angles are (2x)°, (3x)° , and (x+60)°. what is the value of x?
ratelena [41]
Well combine:
2x + 3x + x + 60 = 180
combine like terms:
6x + 60 =180
then move the 60:
6x = -120
now divide both sides by 6:
x= -20
i hope this helped! :)
6 0
3 years ago
Read 2 more answers
Which inequality does the number line represent? A) 2x + 7 &lt; 1 B) x − 3 ≥ −7 C) −3(x − 2) ≤ 12 D) −5(3x − 10) ≥ −10
vaieri [72.5K]

Answer:

compound Inequalities.

8 0
3 years ago
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