2) Let x represent the average annual hours per person spent in traffic delays and y represent theaverage annual gallons of fuel wasted per person in traffic delays. A random sample of 8 cities showedthe following data:XY28jo485123203435ZD 2520342330 35 403818a) Draw a scatter plot diagram and the line that you think that best fits the data60%"so: Ave Gallons4030285Five. HoursDelay9b) Would you say the correlationis positive, negative or close tozero?

Solution: let X represent the average annual hours per person spent in traffic delays. y represent…

Answered: 2) Let x represent the average annual…

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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Here is a data set summarized as a stem-and-leaf plot: Stem Leaf 6 1 2 2 3 4 9 7 2 2 2 2 4 9 9 8 4 7 9 5 6 9 Key: 4|5 = 45 How many data values are in this data set? What is the minimum value in the last class? How many of the original values are greater than or equal to 80? What percent of values are greater than or equal to 80? Answer with a percentage rounded to the nearest whole number.
With this chart, what would be the most appropriate scatter plot from these choices?
B) has more than one answer .. Thank you
The following is data for the first and second Quiz scores for 8 students in a class. First Quiz (Q1) Second Quiz (Q2) 15 15 16 13 17 15 22 21 24 24 26 21 29 27 30 27 Plot the points in the grid below, then sketch a line that best fits the data. Use the line above to predict the value of the second quiz score if a student had a score of 1212 on the first test. (Please enter a whole number)
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.
Consider the following ordered data. 8 8 8 9 9 10 11 11 12 15 16 18 A) Find the low, Q1, median, Q3, and high. b) Find the interquartile range. C) Make a box-and-whisker plot.
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.
L3Q8.Find the type of relationship that exists between the two variables x and y in the scatter plot. A.Zero correlation B.Negative correlation C.Positive correlation D.None of the choices
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
L1Q6.
Given the following data: 12, 14, 13, 20, 18, 15, 5, 6 and 19. Construct a box-and-whisker plot for the data set. +++++++ 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 +++-++ 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2l 22 23 +++ 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 一 5 6 10 11 12 13 14 15 16 17 18 19 20 21 22 23
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?

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