on 12 ol 15Suppose a researcher collects data on the air pollution levels, measured in milligrams per cubic meter, for both urban and ruralareas in 35 states. The data is plotted with urban air pollution levels on the horizontal axis and rural air pollution levels on thevertical axis. Nevada is an outlier in the y-direction.What must be true about this state?O The rural air pollution level for this state is much higher or lower than other states in the data set that havesimilar urban air pollution levels.O This state is an influential observation.O The absolute value of the residual of this state is large.O The urban air pollution level for this state is much higher or lower than the rest of the states in the data set.O The rural air pollution level for this state is much higher or much lower than the rest of the states in the dataset.DELL&5.8.ykこの

Answered: Image /qna-images/answer/263ee40b-bfdc-4bdf-8e83-c11745c64496.jpg

Answered: Suppose a researcher collects data on…

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 data below shows the square feet of living space and the selling price of 12 residential properties. Residence x (sq. ft.) y (in thousands) 1 1,360 $417.8 2 1,940 $563.6 3 1,750 $509.3 4 1,550 $494.7 1,790 $443.4 1,750 $465.5 7 2,230 $690.8 1,600 $457.8 1,450 $432.9 10 1,870 $548.6 11 2,210 $638.0 12 1,480 $403.2 n USE SALT (a) Find the best-fitting line that describes these data. (Round your numeric values to three decimal places.) y =
The table shows the total number of trade apprenticeships in Canada each year from 1991 to 1997 a) Consider the year 1991 as year #0. Create a scatter plot of the data on the next page using the DESMOS graphing calculator. apprenticeships 192,945 Year 1991 1992 180,965 168,985 163,750 163,370 1993 1994 1995 1996 165,325 171,180 1997 b) From the scatter plot, which model appears most appropriate: linear, quadratic, exponential. Give reason for your answer c) Generate a model for the data (line/curve of best fit) using regression. Write the equation of the model that best fits the data. d) Use the model to predict when apprenticeships will return to 1991 levels.
The Big Mac index is a way of measuring Purchasing Power Parity (PPP) between different countries. By diverting the average national Big Mac prices to U.S. dollars, the same goods can be informally compared. The Big Mac can also be a good indicator for the individual purchasing power of an economy since he exists worldwide in standard size, composition and quality. Price # of Countries Rel. f. Cum. f 1.50-1.99 2 2.00-2.49 4 2.50-2.99 7 3.00-3.49 9 3.50-3.99 7 4.00-4.49 8 4.50-4.99 9 5.00-5.49 7 5.50-5.99 1 6.00-6.49 2 6.50-6.99 1
Interpolate the Sales for 1990 from the following data. Years : 1988 1989 1990 1991 1992 Sales : 250 290 ? 390 425 Use Parabolic curve method.
2. The scatter plot and curve of best fit show the relationship between the diameter of rain-collection barrels and the volume of water collected. Is this relation linear or non-linear? Justify your answer. VA Diameter Volume
An office supply company services copiers and tracks how many machines are serviced and the length of time (in minutes) for a service call. The data below for 11 clients is below. Sum X = 46 Sum Y= 234 Sum XY = 5797 Sum X2 =1180 Sum Y2 =146608 1) Calculate SSYY, SSXX, SSXY 2) Calculate b0, b1 3) Interpret the estimated slope coefficient.
If the class limits for a particular class in grouped data displaying the heights of group of medical students visiting the hospital is140cm – 150cm to the nearest cm, then the lower-class boundary is 139.5 cm 140 cm 140.5 cm 149.5 cm 150.5 cm
The data table to the right represents the volumes of a generic soda brand. Complete parts (a) and (b) below. a. Which plot represents a dotplot of the data? O A. O C. 50 60 50 70 80 90 Volumes of soda (oz) 60 70 80 90 Volumes of soda (oz) o o Q Q 520 Q Q 5 www. O B. OD. 50 50 60 70 60 Volumes of soda (oz) 70 80 75 70 65 50 元 5 75 75 85 . 70 65 Volumes of soda (oz) 80 90 70 80 90 Volumes of soda (oz) 65 80 70 Q Q Q Q
2.7 - a. Write a few short sentences that compare the center and the spread for each dot plot. b. Based on this sample, cereals from which manufacturer tend to have no variation in calories?
2. You need to present data to your boss and an assistant gives you a scatter gram with random points. They do not seem to form a line but r = 0.95. You did not draw the graph or calculate r. You do have the original data in front of you and it is accurate. How would you handle the discrepancy between the scatter gram and value for r?
Item#3 A chemical engineer desiring to study the evaporation rate of water from brine evaporation beds obtained data on the number of inches of evaporation in each of 55 July days spread over 4 years. The data are given in the following stem and leaf plot, which shows that the smallest data value was o.02 inch, and the largest o.56 inch. Stem Leaf 0.0 2, 6 0.1 1, 4 1, 1, 1, 3, 3, 4, 5, 5, 5, 6, 9 0, 0, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 8, 9 0, 1, 2, 2, 2, 3, 4, 4, 4, 5, 5, 5, 7, 8, 8, 8, 9, 9 2, 5, 6 0.2 0.3 0.4 0.5 Find the: a) sample mean; b) sample median; c) sample standard deviation of these data. d) Do the data appear to be approximately normal? e) What percentage of data values are within 1 standard deviation of the mean?
ructure.com Question 2 A data set reports the car mileage for 150 student cars. The median car mileage is 45,000 miles; Qu = 92,000 miles and Q = 35,000 miles. Which of the following car mileages are outliers with respect to a box-plot of this data set? I. 175,000 miles II. 180,000 miles II. 185,000 miles O Il only O Il and IlI only O All of the Above O Ill only O None of the Above • Previous Next No new data to savo

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