5. Given are five observations for two variables, x and y. Given are five observations for two variables, x and y.41091512Yi6047561329a. Choose the correct scatter diagram for these data:А.В.y60605050404030-3020-2010-10102030405060 x102030405060 X Select your answer -b. What does the scatter diagram developed in part (a) indicate about the relationship between the two variables?There appears to be aSelect your answer -linear relationship between x and y.c. Try to approximate the relationship between x and y by drawing a straight line through the data.Select your answer -v to provide a linear approximation of the relationship between x and y.d. Develop the estimated regression equation by computing the values of bo andusing equations: (Enter negative values as negative figure)(t; – 7)(y: – T)b1bo = j – b1x (to 2 decimals)e. Use the estimated regression equation to predict the value of y when x = 16.(to 2 decimals)

The data shows x and y variables with 5 observations.

Answered: b. What does the scatter diagram…

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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Q2) Find the least -59uarus line y=fea) = Ax +B for the following data 2. 2. -1 2. 3.
2. Create xand y vcctors to represent the following data: yl/x- x = 15 x = 30 y = 10 z = 23 33 20 45 55 30 60 70 40 82 92 50 111 121 60 140 150 70 167 177 80 198 198 90 200 210 100 20 230 26 1. Plot both scts of y-z data on the same plot. Add a legend identifying which valuc of x applics to cach data set. 2. Use two-dimensional lincar interpolation to approximate the value of : when y= 15 and x 20. 3. Use two-dimensional cubic spline interpolation to approximate the value of z when y = 15 and x 20. 4. Usc lincar interpolation to create a new subtable for x 20 and x for all the y-values. 25
17. A researcher surveyed 90 patients at a certain hospital. The histogram below gives the length of time patients waited to see a doctor at the hospital. The classes, in minutes, are 5 - 9.9, 10 - 14.5, etc., and the vertical axis represents the number of patients. 25 BI yllem number of patients 20 15 10 5 0 aga siqma znova ois 3 has 3 szoqqu2 21 wollo) si bart 28.0= 5 10 15 20 25 30 35 40 45 wait time (minutes) (a) Use the histogram to determine the percent of patients that waited less than 15 minutes to see the doctor. (b) Determine the interval that contains the median wait time.
4.- For the following data set 10, 7, 6, k, 4, 7, 1, 10. Find the value of k so that (a) X = 6.25 (b) X = 7.5 Villalobos 2020 22 (c) M = 7 (d) MR = 10 CHAPTER 3. DATA DESCRIPTION
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7.) 7.) which of the following describes a direct relationship between and independent and a dependent variable, after controlling for a third variable? a. the bivariate relationship changes acress the partial tables. b.one partial table is the same as the bivariate table, the other(s) are very different c. the bivariate realtionship is the same across the partial tables d. the partial tables have many empty cells.
Let Q,, Q2 and Q, be dummy variables with the value 1 indicating observations are from first, second and third quarters and the value 0 otherwise, respectively. If the investigator estimates company sale measured in million dollars as sale = 4+ 20, +2.5Q2 +30,, then the investigator: O a. forecasts sale for the first quarter to be 3.5 m$. O b. forecasts sale for the first quarter to be 3 m$. O c. forecasts sale for the first quarter to be 1 m$. O d. forecasts sale for the last quarter to be 8.5 m$. e. forecasts sale for the last quarter to be 4 m$.
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The following data are the numbers of local channels available in 16 citie 16, 10, 20, 8, 35, 20, 13, 28, 38, 31, 21, 27, 9, 11, 28, 27 Send data to calculator Using the tool provided, construct a box-and-whisker plot for the data. 10 15 20 25 30 35 40 Number of local channels avalable 5n
use. Do a conclusion about thiS 20.5 "reference" drugs that they imitate. One aspect in which ance times (second received the generic drug first, followed by the reference signed at random to the subjects. Subjects 1 through 10 matched pairs design. Numbers 1 through 20 were as- TABLE 20.5 Absorption extent for two drug first, followed by the generic drug. In all 20.50 Comparing two drugs. Makers of generic drugs must ght-hand and left. reads chow that they do not differ significantly from the Astep "reference" drugs that they imitate. One aspect in which Arugs might differ is their extent of absorption in the klood. Table 20.5 gives data taken from 20 healthy non- smoking male subjects tor one pair of drugs." This is a matched pairs design. Numbers 1 through 20 were as- signed at random to the subjects. Subjects 1 through 10 20. Subject Thread Th Right drug. Subjects 11 through 20 received the reference drug first, followed by the generic drug. In all cases, a washout period separated…
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