Illustration 72.The following data give daily sales of a shop observing a 5-days week overfour successive weeks. Determine the period of the moving average and calculatethe moving averages accordingly :346.789.10Days :Sales :12629354751263237465311121314151617181920Days :Sales :28303646542831364654

Answered: Image /qna-images/answer/2373501a-323b-4d0a-a9e0-4583e073c262.jpg

Answered: The following data give daily sales of…

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 gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams, Hours spent studying 0.5 1 1.5 2 2.5 4 4.5 5 5.5 6 Midterm Grades 63 69 75 78 81 84 90 93 96 99 Draw a scatter plot of the given data. Select a location in the chart to plot a point. Points can be moved by dragging or using the arrow keys. Estimate the correlation in words: positive, neagative, no correlation Calculate the correlation coefficient, r. Round your answer to three decimal places. Hours unspervised 0 1 2 4 5 Overall Grades 100 92 88 84 72 Calculate the correlation coefficient, r. Round your answer to three decimal places. Determine whether the given correlation coefficient is staatically significant at the specified level of significance and sample size. r=0.452 ,a=0.005, n=28
The following table present quarterly sales for a company over the three years (a) Fit the trend as a linear function of time t and predict the sales for the 4th year? Year 2 Year 3 309 405 326 429 369 446 416 465 quarter 1 2 3 4 Year 1 241 263 273 292
4
The table gives information about the number of people staying in a hotel each quarter in 2020 and in 2021.Calculate the 4-point moving averages for this information. year 2020 2021 quarter 1 2 3 4 1 2 3 4 people 261 353 372 290 193 309 292 202
Q. 4.
Please help me answer the questions about correlation according to the graph. So would it be linear, strong, positive, or no association? Or negative and weak?
Activity 3 A property developer analyzed the amount of office space available in 40 office blocks in the CBD of Gobabis. The following floor areas were recorded. 175 150 178 144 182 172 126 143 146 116 182 140 162 155 176 140 165 165 142 165 168 120 160 155 170 162 177 164 158 118 135 162 195 124 135 150 178 190 160 185 Is the data Continuous or discrete Quantitative or qualitative. Nominal, ordinal, ratio or interval scaled? Determine the range of the data. Use Sturges Rule to determine k, the number of classes, also determine the class width and the appropriate class limits. Construct a frequency distribution for the data. Construct a histogram for the data. Interpret your histogram. Construct a frequency polygon and interpret it. Construct a less than ogive for the data. Construct a more than ogive for the data. From your graph what percentage of office blocks has available…
The following table shows the values of the age and the job satisfaction of ice cream shop employees Employee Age Job Satisfaction16 918 920 722 824 426 528 626 524 722 8 d. Sketch a scatterplot of this data by hand (do NOT use/submit any plots created by a program).e. Does there appear to be a linear relationship between the two variables? f. Calculate the slope for this data.
Complete the table with data showing the results of the examinations out of 100 taken by 9 students in Statistics class depicting either a positive or negative correlation. Exam 1 (x) Exam 2 (y) 78 86 57 68 76 92 87 66 54 74 61 84 77 75 71 66 88 71 Using the following information above: A. Draw a scatter graph. B. Draw a line of best fit and comment on the correlation. c. Work out the gradient of the line of best fit. please with all explanation
The below data represent the advertising expenditure and sales of Little Liu Ltd from year 2008 to 2017. Table: Advertising Expenditure vs. Sales from 2008 to 2017 Year Advert. Expenditure Sales (x, £000) (y, £000) 2008 8 30 2009 12 40 2010 11 29 2011 5 29 2012 14 43 2013 3 17 2014 6 20 2015 8 30 2016 4 22 2017 9 40 Total 80 300 Figure: Scatter Diagram of Advertising Expenditure and Sales with Trend line ( See picture) What is the statistical relationship shown in the Figure and list out 3 characteristics of this relationship? 2. Work out the values of parameters of the relationship shown in the Figure (i.e. work out the equation of the relationship). 3.Explain the relationship and make recommendations to Little Liu Ltd based on the information given.

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