![zitterkoph](/avatars/49230.jpg)
zitterkoph
23.06.2019 •
Mathematics
Annual high temperatures in a certain location have been tracked for several years. let x represent the year and y the high temperature. based on the data shown below, calculate the regression line (each value to two decimal places). y= x=
Solved
Show answers
More tips
- S Style and Beauty How to Tie a Tie Correctly: A Simple Guide...
- F Food and Cooking How to Make Polendwitsa at Home?...
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- H Health and Medicine How to Treat Whooping Cough in Children?...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
Answers on questions: Mathematics
- M Mathematics What is the solution to this equation 5x = 35...
- M Mathematics Three kittens weighing 2 1/2 pounds, 3 1/4 pounds, and 3 3/4pounds were born on Tuesday. Two puppies weighing 4 2/4 pounds and 3 1/4 pounds were born on Wednesday....
- M Mathematics Can someone help me with this question for statistics class?...
- M Mathematics When sketching a normal curve, what value represents one standard deviation to the right of the mean for the data set? 56, 54, 45, 52, and 48....
- M Mathematics What is (990)xcm+34 pls help...
- M Mathematics *PLEASE ANSWER* Compare the volume of these two shapes,given their radii and heights are the same ....
- M Mathematics Please help me with this question...
- M Mathematics Which ordered pairs are in the solution set of the system of linear inequalities? Y _-1/3x+2 Y 2x+3...
- M Mathematics At a seaport, the relationship between water depth (d) and time (t) is sinusoidal. Write a sinusoidal equation given the following information about the water depth....
- M Mathematics According to an article the submerged arc welding (SAW) process is commonly used for joining thick plates and pipes. The heat affected zone (HAZ), a band created...
Ответ:
Y= 19.86 - 0.42b
Step-by-step explanation:
Step 1: Write the formula
Regression Line: Y = a + bx
a=(Total Y) x (Total X^2) - (Total X) x (Total XY)
n x (total X^2) - (Total X)^2
b= n x (Total XY) - (Total X) x (Total Y)
n x (total X^2) - (Total X)^2
Step 2: Make a table to find all values
X Y X^2 Y^2 XY
517.1925295.4961 85.95
619.1236365.5744 114.72
716.7549280.5625 117.25
815.5864242.7364 124.64
916.2181262.7641 145.89
1014.14100199.9396 141.1
1114.97121224.1009 164.67
1216.2 144262.44 194.4
68130.16 620 2133.614 1088.62 TOTAL
Step 3: Substitute all values in the equation to find a and b
a=(Total Y) x (Total X^2) - (Total X) x (Total XY)
n x (total X^2) - (Total X)^2
a= (130.16 x 620) - (68 x 1088.62)
8 x (620) - (68)^2
a = 80699.2 - 74026.16
336
a = 19.86
b = n x (Total XY) - (Total X) x (Total Y)
n x (total X^2) - (Total X)^2
b = 8 x (1088.62) - (68 x 130.16)
8 x (620) - (68)^2
b = 8708.96 - 8850.88
336
b = -0.42
Step 4 : Apply values of a and b in the formula of the regression line.
Regression Line: Y = a + bx
Y= 19.86 + b (-0.42)
Y= 19.86 - 0.42b
Ответ:
$21
Step-by-step explanation:
$4.50x3=$13.5
$1.25x6=$7.5
$13.5+$7.5=$21