Consider the bivariate data shown in the table.Xy810.2compute ΣΥΣΥ99.3108.8117.1126.6135.3144.2153162.9

X: 8,9,10,11,12,13,14,15,16Y: 10.2,9.3,8.8,7.1,6.6,5.3,4.2,3,2.9

Answered: Consider the bivariate data shown in…

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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The following data has been provided: 1 2 3 4 5 x y 8 10 12 15 20 Predict the y-value when x is 8 Select the correct answer below: 8 20.5 15.75 27.5 8.53
An electric utility wishes to examine the relationship between temperature and electricity use in its service region during the summer months. The bivariate data below give the maximum temperature (denoted by x, in degrees Fahrenheit) and the electricity use (denoted by in thousands of kilowatt hours) for a random sample of sixteen summer days. The data are shown in the Figure 1 scatter plot. Also given are the products of the temperature values and values for electricity use for each of the sixteen days. (These products, written in the column labelled "xy," may aid in calculations.) У, Temperature, x Electricity use, y (in degrees Fahrenheit) (in thousands of kilowatt hours) ху 82.2 254.3 20903.46 88.8 309.3 27465.84 400- 81.0 298.2 24154.2 71.9 297.4 21383.06 375- 83.4 366.5 30566.1 350- 95.4 329.0 31386.6 325- 82.8 315.0 26082 300 73.1 297.7 21761.87 91.7 323.7 29683.29 275- 91.4 343.3 31377.62 250 98.4 385.7 37952.88 225 77.8 292.7 22772.06 69.5 270.0 18765 80 90 100 97.0 287.6…
Q.1 Q.1 Two samples A and B were taken from a large concrete mix and tested for the compressive strength of concrete (in MPa), find the mean, median and mode of cach of the two samples. The results of tested specimens from each sample were as follows: 国 Compressive Strength 15 18 21 24 27 30 (MPa) Sample A Frequency 2 2 4 1 Sample B Frequency 3 2 2 1 Option 1 13
Here is a bivariate data set. X y 58 23 r = 5181811149414538140 2522*****8 28 49 38 59 40 24 29 46 34 43 45 44 45 36 Find the correlation coefficient and report it accurate to four decimal places.
23:23 ..l ? YE 74 [Template] Sta.. Business Statistics Skill 2 Answer the following Questions. Each question carries 5 marks. (2*5=10) 1. Calculate Coefficient of correlation from the following data: 500 1000 1500 2000 2500 3000 3500 100 200 300 400 500 600 700 2. Obtain the regression equations for the following taking 42 and 58 as assumed mean. |X 10 25 34 42 37 35 36 45 Y 56 64 63 58 73 75 82 77
x y A random sample of two variables, x and y produced the following observations: 19 7 13 9 17 8 9 11 12 9 25 6 20 7 3. Test the significance of the slope of the correction model at a = 0.05 17 8 1. Develop a scatter plot of the data. Does the plot suggest a linear or nonlinear relationship betwe dependent and independent variables? 2. Compute the correlation coefficient between x and y (to.05 = 1.9432)
. In a trivariate distribution. o, = 3, o, = 4, o, = 5 rn = 0.4, r, = 0.6 r,, = 0.7 Determine the regression equation of X. on X, and X, if the variates are measured frem their means.
Solve.
Consider the bivariate dataset for variable Arkansas, (X) and variable Nebraska, (Y) given by the table. Group Arkansas Nebraska A 2.12 15 В 2.28 12 3.04 16 3.46 13 E 3.14 14 a. Find the value of the y-intercept of the regression line:
Here is a bivariate data set. x y 37 46 43 43 63 -8 61 8 79 -38 37 56 45 44 Find the correlation coefficient and report it accurate to four decimal places.r =

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Consider the bivariate data shown in the table. X Y 8 10.2 compute ΣΥΣΥ 9 9.3 10 8.8 11 7.1 12 6.6 13 14 5.3 4.2 15 3 16 2.9