1) a) The following distribution shows the number of cars sold each month by a garage...
Approximate the measures of center for following GFDT.DataFrequency50 - 541055 - 592360 - 641365 - 691270 - 74575 - 79780 - 84485 - 89090 - 941mode = median = mean = Report mode and median accurate to one decimal place. Report the mean accurate to two decimal places (or enter as a fraction).
Question 1 (30 marks) The scores of 60 students in a test are: 58 49 48 62 50 76 61 82 60 72 70 35 61 55 82 66 50 47 36 58 84 55 68 32 62 58 48 75 80 49 55 67 71 46 40 57 69 70 52 60 48 53 42 68 54 60 63 70 72 68 42 55 36 70 36 82 66 46 59 50 (i) Find the mean score of the...
Honest Al's Used Cars wants to predict how many cars are sold each month. He has collected data for 12 months. He needs your help in analyzing this data using moving averages. A B C 1 Number of 4-Month 2 Time Period Cars Sold Moving Avg. 3 1 70 4 2 80 5 3 66 6 4 74 7 5 64 8 6 76 71.00 9 7 72 70.00 10 8 82 71.50 11 9 82 73.50 12 10 76...
Find the mean, median and mode of the following distributions. Do not round answrs to whole numbers. 28 16 36 16 30 22 1. mean 2. median 3. mode B. X 52 51 50 49 48 47 4 6 4. mean 5. median 6. mode 3 2 4 c.x 7. median interval 8. modal interval 60-69 4 50-59 4 40-49 12 30-39 11 20-29 11 10-19 5 0-94
The following frequency distribution shows the number of passengers who flew on a small regional aircraft company’s flight number 1853 for the past 50 days. Number of passengers on Flight 1853 Frequency (days) Relative Frequency Cumulative Relative Frequency 50 to 59 5 60 to 69 13 70 to 79 17 80 to 89 7 90 to 99 6 100 to 109 2 Use this data to construct a relative frequency and cumulative relative frequency distribution. Report all of your answers...
2. Samples of the age in years of student cars and faculty/staff cars: Student: 10,4, 5,2, 9, 7, 8, 8,7, 13, 12, n-11 Faculty: 5, 10, 4, 13, 2,3, 2, 7, 6, 6, 3, 4, n 12 Calculate the mean, median, and mode for each group. Do either of these distributions appear to be skewed? 3. The data below reflect movie viewers' recall of products/brands shown within either humorous or dramatic movies. Calculate the range, variance, and standard deviation of...
the table below shows the number of cars sold last month by seven employees at concord motors and thier numbers of year of sales experience experience /sales 1 experience sales 1 8 2 6 2 7 4 14 5 9 6 13 8 10 a regression model is fitted to predict the dependent variable using the independent variable. the model is, y=6.94+0.66x. use the model and predict the y value at x=6 b) what is the error of prediction in...
The following table shows the number of cars sold last month by six dealers at Centreville Nissan dealership and their number of years of sales experience. Years of Experience Sales 1 7 2 9 2 9 4 8 5 14 8 14 Management would like to use simple regression analysis to estimate monthly car sales using the number of years of sales experience. The standard error of the estimate is equal to ________. Multiple Choice 2.60 5.00 2.84 1.84
3 Using your TI-83/4, calculate the (a) minimum, (b) lower quartile (Q1), (c) median, (d) upper quartile (Q3) and (e) maximum of the following data (n = 25; Sx = 260). (p 89) 2 3 15 10 11 7 19 12 -3 14 6 2 14 12 22 2 16 22 9 5 0 13 13 16 18 4 Using your TI-83/4, sketch a histogram of the following data (n = 25; Sx = 1327) and calculate...
16 of 0 2 complete) This T The table below shows the number of cars sold per month last year and the number of years of sales experience for six randomly selected employees of Concord Motors Experience years) Sales number of cars) 8 2 16 4 14 5 15 7 25 31 O A. 13 OB. 14 OC. 15 OD. 16 O E. None of the above Find the equation of the least squares regression line and use it to...