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sammy [17]
3 years ago
7

What is a correlation coefficient?

Mathematics
2 answers:
kogti [31]3 years ago
8 0

A correlation coefficient is a number that indicates the direction in closeness of points of a line of best fit.

So it tells us the direction of the line of best fit and it tells us the closeness to the points of the line of best fit.

Ivan3 years ago
6 0

Answer:

a number between −1 and +1 calculated so as to represent the linear dependence of two variables or sets of data.

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Step-by-step explanation:

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Ava is 35 years old. She has $1000 in a checking account, $7500 in investments, $15,000 in a retirement account, and owns a hous
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3 years ago
A study was recently conducted to estimate the mean cholesterol for adult males over the age of 55 years. From a random sample o
Komok [63]

Answer:  Correct critical value = 2.2622

Step-by-step explanation:

Confidence interval for population mean when population standard deviation is unknown:

\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}} , where \overline{x} = sample mean, n= sample size, s= sample standard deviation, t_{\alpha/2} = two-tailed t value.

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degree of freedom : df = n-1=9

\overline{x}=242.6\\\\s=73.33\\\\\alpha=5\%=0.05

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So, the 95 percent confidence interval estimate for the​ mean :

242.6\pm (2.2622)\dfrac{73.33}{\sqrt{10}}\\\\=242.6\pm (2.2622)(23.19)\\\\\approx242.6\pm52.46\\\\=(242.6-52.46,\ 242.6+52.46)\\\\=(190.14,\ 295.06)

The 95 percent confidence interval estimate for the​ mean:(190.14, 295.06)

8 0
3 years ago
Please please help I’ll give the brain thing if you help but you need to have a correct answer + explain thanks :)))
Alecsey [184]

Answer:

i really dont know im in 7th grade im so sorry

Step-by-step explanation:

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2 years ago
How to write 6,858.026 in expanded form
tia_tia [17]
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3 years ago
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