MATHEMATICS HIGH SCHOOL

For which data set is a linear regression most reasonable

Answers

Answer 1

Answer:

Answer:

C. a set of four data pairs with a correlation coefficient r = –0.8

Step-by-step explanation:

The options for this answer are

A. a set of nine data pairs with a correlation coefficient r = –0.4

B. a set of five data pairs with a correlation coefficient r = 0.3

C. a set of four data pairs with a correlation coefficient r = –0.8

D. a set of six data pairs with a correlation coefficient r = 0.6

The correlation coefficient is a statistical measure about the relationship between two variables. Specifically, it tells if there's a positive or negative correlation, and how strong or weak it is.

The interval of a correlation coefficient is from -1 to 1, and the nearer the value gets to zero, the less correlation exist between variables. If the coefficient is near 1, that means there is a strong positive correlation, and if the coefficient is near -1, that means there's a strong negative correlation.

So, in this case, option C shows a correlation coefficient of -0.8, which is the "highest" coefficient among options, this means that it represents the strongest correlation among options.

Therefore, the best data set that fits a linear correlation is C.

Answer 2

Answer: If your data consists of scores from variables that are correlated or those that you already correlated with, then the most reasonable data statistical analysis would be a linear regression. This is used usually in order to determine if one variable predicts the other.

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Help me pls show your work!

Answers

Answer:

-94

Step-by-step explanation:

f(-7): YOU MUST SUB THIS INTO THE CORRECT EQUATION. DO NOT SUB -7 INTO G!!! SUB IT INTO F

-2x(-7)^2 + 4

-2x(49) + 4

-98 + 4

= -94

A segment of a circle has 120 degree arc and a cord of 8 square root 3 in. Find the area of the segment

Answers

Answer:

ok then

Step-by-step explanation:

Segementhaveangleof120degree

sorryissseaaghenhiaate

120 is the right answer

If a 25 ft rope is cut into two sections with one section 4 times as long as the other section, how long is the shorter piece?

Answers

x - shorter piece
4x - longer piece

$x+4x=25\n 5x=25\n x=5\hbox{ ft}$

Which expression finds the measure of an angle that is coterminal with a 45° angle?

Answers

Hello,

a coterminal with 45° is 45°+k°360° with k as integer.
with k=0==>45°
k=1==>45°+360°=405°
k=-1==>45°-360°=-315°
...

Answer: THE ANSWER IS: 45° + 360°

Step-by-step explanation:

i took the test on Engenuity

The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. A cone is used to fill the cylinder with water. The radius of the cone's base is 5 centimeters, and its height is 10 centimeters.The number of times one needs to use the completely filled cone to completely fill the cylinder with water is.....