Answered: Find the regression equations between…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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income and consumption, Calculate estimated regression lineand co-efficient of determination. 1Income 80 100 120140 160 180 200240 260Consumption 55 63 75 81 93 105 117 127 140 165
X 1 2 3 4 5 6 1. Determine if the following tables represent a linear, quadratic, or exponential relationship using finite differences and/or ratios. Show all your work. y 14 19 24 29 34 39 X 0 2 4 6 8 10 y 0 -4 -6 -4 0 6 x y 1 800 2 400 3 200 4 100 5 50 6 25
The data in the table represents the amount of fish in a pond after a set amount of weeks. Week 0 1 2 3 4 5 Fish 12 17 24 30 35 42 If the data continues the same linear trend, how many fish do you expect to be in the pond on week 7? 48 fish 40 fish 60 fish 54 fish
Machine hours and electricity costs for AMK Industries for the past year were as follows: Month January February March April May June July August Machine hours 72 73 77 69 66 71 80 63 Electricity costs $750 $750 $790 $730 $690 $720 $800 $730 Required: Using regression analysis determine the cost function for AMK Industries
F # 40
Cathy makes a single deposit into an account earning 2.5% compounded monthly. After five years the account contains $3057.46.how much did she deposit?
A study was done to look at the relationship between number of vacation days employees take each year and the number of sick days they take each year. The results of the survey are shown below. Vacation Days 5 15 13 3 9 0 3 7 7 14 4 Sick Days 5 5 1 5 4 9 9 6 5 3 9 Use the model to predict the number of sick days taken for an employee who took 3 vacation days this year.Sick Days = ? (Please round your answer to the nearest whole number.) Interpret the slope of the regression line in the context of the question: As x goes up, y goes down. The slope has no practical meaning since a negative number cannot occur with vacation days and sick days. For every additional vacation day taken, employees tend to take on average 0.40 fewer sick days. Interpret the y-intercept in the context of the question: The y-intercept has no practical meaning for this study. If an employee takes no vacation days, then that employee will take 8 sick days. The average number of sick days is…
answer using minitab or excel
X 33 46 72 105 114 Y 209 228 170 127 109 1) What is slope of the regression line predicting Y from X,rounded to 2 decimal places? 2) What is the intercept of the regression line predicting Y from X, rounded to 2 decimal places? 3) What is the correlation between X and Y, rounded to 2 decimal places?
Use least squares regression to fit a line to the table data below.
Help with 4
Given the number of calls per week received by a dental clinic, what is the forecasted number of calls for week 12 considering that the forecast for week 1 was 47 and a smoothing constant a -0.2? CALLS 52 35 25 36 45 35 44 WEEK 1 2 3 4 5 6 7 869 10 34 calls 35 calls 33 calls 38 calls 30 35 25

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Find the regression equations between Sales and Profit Sales 10 20 30 25 15 18 22 35 42 Profit 22 25 26 10 12 15 16 29 40