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natka813 [3]
3 years ago
11

For science class, a student recorded the high and low temperatures, in Fahrenheit, over a ten day period in September. The data

is shown in the table.
Low Temperature, x 26 28 30 32 34 35 37 38 41 45
High Temperature, y 49 50 57 54 60 58 64 66 63 72
A) What is the correlation for a linear model of this data? Round to the nearest hundredth.

r =

B) Ten high and low temperatures in October are recorded and have a correlation coefficient of 0.89. In which month is there a stronger correlation between the high and low temperatures? Explain your answer.
Mathematics
2 answers:
yKpoI14uk [10]3 years ago
7 0

Answer:

0.95; September.

Step-by-step explanation:

In a graphing calculator, we enter the data.  The low temperature will be entered as the independent variable and the high temperature will be entered as the dependent.

Running a linear regression on the data, we get a correlation coefficient, r, of 0.94775 ≈ 0.95.

Since the correlation coefficient for October is 0.89, while that of September is 0.95, the correlation for September is stronger than that of October.  The closer the correlation coefficient is to 1, the stronger the relationship.

Anestetic [448]3 years ago
3 0
Thee correlation factor formula for two variables is 
(r) =[ nΣxy – (Σx)(Σy) / Sqrt([nΣx^2 – (Σx)^2][nΣy^2 – (Σy)^2])].

A). as per the formula the correlation factor for the given  data is 0.94.

B). the month of September has the highest correlation as 0.94 is much closer to 1 than 0.89.( note: 1 denotes the perfect correlation and 0 denotes no correlation at all)

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The common difference in an arithmetic sequence is –2 and the first term is 47. What is the 29th term?
BlackZzzverrR [31]

An arithmetic sequence is an ordered list of numbers where the next number is found by adding on to the last number (ex: 2,5,8,11... is a sequence where 3 is added on to find the next number).

The equation for an arithmetic sequence is
A_{n}=A_{1}+(n-1)d

A_{n} is the "n-th" number in the sequence (ex:  is the first term in the sequence)
d is the number you add (common difference) to find the next number
The first number in the sequence is 47 so A_{1}=47
<span>d=-2 because the question gives you that
</span>
A_{n}=A_{1}+(n-1)d
<span>A_{29}=47+(29-1)(-2)
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</span>
The answer is A. -9.

<u>                                                       </u>

<span>The answer is C. 158</span>

For the second one, it gives you A_{1}=4 and <span>A_{}=18
You can use this to find d

</span><span>A_{n}=A_{1}+(n-1)d
</span><span>A_{3}=4+(3-1)d
</span><span>18=4+(3-1)d
</span><span>18=4+2d
</span><span>14=2d
</span><span>7=d
</span>
Now you can just solve using the equation normally.
<span>A_{n}=A_{1}+(n-1)d
</span><span>A_{23}=4+(23-1)(7)
</span><span>A_{23}=4+(22)(7)
</span><span>A_{23}=4+154
</span><span>A_{23}=158
</span>
The answer is C. 158
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ANSWER THIS TO BE MARKED AS BRAINLIEST
skad [1K]

you can find the answers in this website.

https://www.enotes.com/homework-help/topic/the-war-of-the-wall

hope it helps u it has the question then the answer

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