Following are the marks, out of 100, obtained by50 stuaents in Statistics :70 45 33 64 50 25 65 7555 65 60 58 52 56 45 42 35 4030 2047 51 39 61 33 59 49 41 155542 63 82 65 45 63 54 52 48 4657 53 55 42 45 39 64 55 26 18Make a frequency distribution taking a class interval of 10marks ; take the first class interval as 0-10.

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Answered: Following are the marks, out of 100,…

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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2. Draw a frequency histogram and cumulative frequency polygon for the following distributions: b. The systolic blood pressure (at rest) of the 700 female staff members at Polytechnic University: Systolic Blood Pressure Frequency 101 110 68 111 120 187 121 130 131 140 209 88 141 150 76 Over 150 72
A grocery store manager did a study to look at the relationship between the amount of time (in minutes) customers spend in the store and the amount of money (in dollars) they spend. The results of the survey are shown below. Time 21 19 23 25 17 12 19 Money 106 80 87 96 80 39 92 a. Find the correlation coefficient: r = Round to 2 decimal places. b. The null and alternative hypotheses for correlation are: Họ: ? H1: ? v + O The p-value is: (Round to four decimal places) c. Use a level of significance of a = 0.05 to state the conclusion of the hypothesis test in the context of the study. O There is statistically insignificant evidence to conclude that a customer who spends more time at the store will spend more money than a customer who spends less time at the store. O There is statistically significant evidence to conclude that there is a correlation between the amount of time customers spend at the store and the amount of money that they spend at the store. Thus, the regression line is…
The amount of time (seconds) needed for assembly-line workers to complete welding was recorded for 38 workers. 10. 74 68 66 73 76 63 67 69 73 65 61 73 72 65 69 70 61 74 76 72 74 65 63 69 73 60 75 72 75 70 60 62 68 74 71 73 68 67 a) Construct a frequency distribution for these data using six classes.
Answer ASAp. Show complete solution. Assume that the following frequency distribution table shows the scores of Grade 11-Stem A in Business Math Scores Frequency 70-74 12 75-79 11 80-84 10 85-89 9 90-94 8 Total 50 a) Construct a frequency histogram and frequency Polygon b) What conclusion can you derive from the table?
43
Here is a data set: 589 301 420 232 390 385 372 326 312 449 307 459 589 105 271 589 292 337 410 314 366 231 309 423 382 425 457 273 Construct a grouped frequency distribution table (GFDT) for this data set. You want 10 classes with a "nice" class width. Your classes should be labeled using interval notation. Each class contains its lower class limit, and the lower class limits should all be multiples of the class width. In that the data appears to be discrete, use a closed-interval to label each class.
What was the length of time on hold when you called your auto-insurance company? The responses from a survey of 35 people are listed below (in minutes). 2 11 30 35 15 20 18 7 14 24 25 21 5 8 19 18 22 12 12 15 16 21 27 31 12 8 4 14 19 20 34 16 12 7 10 Make a frequency table with FIVE CLASSES and a histogram to answer question 5 to 8. Which of the following statements are TRUE about the class limits and class width? Select all that apply. Group of answer choices A. The class width is 7. B. The five class limits are: 2-9 9-16 16-23 23-30 30-37 C The class width is 6.6 D. The five class limits are: 2-8 9-15 16-22 23-29 30-36 E. The five class limits are: 2-9 10-17 18-25 26-33 34-41
2. 25 values of two variables X and Y are given below. Form a two-way frequency table. Take classes of X as 10 to 20, 20 to 30 etc, that of Y as 100 to 200,200 to 300 etc. X 12 34 33 22 44 37 26 36 55 48 27 52 41 37 21 51 Y 140 266 360 470 470 380 480 315 420 390 440 312 330 390 590 250 X 27 42 43 52 57 44 48 48 69 Y 550 360 570 290 416 380 492 370 590 Obtain (i) the marginal frequency distributions of X and Y. (ii)the conditional distribution of X when Y lies between 300-400. (iii) the conditional distribution of Y when Y lies between 40-50.
Given the following set of data on weights of 57 children at an orphanage: 68 63 42 27 30 36 28 32 79 27 22 23 24 25 44 65 43 25 74 51 36 42 28 31 28 25 45 12 57 5112 32 49 38 42 27 31 50 38 21 16 24 15 47 23 22 43 27 49 2823 19 46 30 43 49 12 a. Determine the number of classes and class with that can be used to construct a frequency distribution table for the data. b. Construct a frequency distribution table using 10 as the lower limit of the first class.c. Provide the relative frequency distribution table. d. Determine the class midpoints and class boundaries. e. Construct a “less than or equal to”…
Given the stem-and-leaf diagram. Answer the following questions: • The total frequency all stems Observations of the stem that has largest frequency Stem-and-leaf of C1 N - 82 Leaf Unit - 0.10 1 4 84 33 4 85 86 777 13 87 456789 24 88 89 23334556679 0233678899 90 0111344456789 0001112256688 22236777 023347 (13) 35 91 22 92 14 93 8 94 2247 95 4 96 97 15 2 2 98 8 1. 99 1 100 3 Q1 88.575 Median Q3 90.400 92.200 a. Total frequency = 18 Observations on the largest frequency: 90.0, 90.1, 90.1, 90.1, 90.3, 90.4, 90.4, 90.4, 90.5, 90.6, 90.7, 90.8, 90.9 b. Total frequency cannot be determined by the present diagram Observations on the largest frequency: 90.0, 90.1, 90.1, 90.1, 90.3, 90.4, 90.4, 90.4, 90.5, 90.6, 90.7, 90.8, 90.9 O.Total frequency = 82 Observations on the largest frequency: 90.0, 90.1, 90.1, 90.1, 90.3, 90.4, 90.4, 90.4, 90.5, 90.6, 90.7, 90.8, 90.9 O d. Total frequency = 82 Observations on the largest frequency: 87.4, 87.5, 87.6, 87.7, 87.8, 87.9 34 5 678 9012NM 435 2
The following are the grades received on an paper by 25 students. 97 97 98 40 45 77 65 65 65 68 81 93 68 71 87 85 88 76 79 78 87 81 81 83 89 a) Fill in the frequency table below using the data given. Use 10-point bins. Note: You may have rows left over. Grade Frequency Relative Frequency Cumulative Frequency Total: b) Draw a histogram based on the frequency table in part a . Don’t forget to label properly the axes, and put a title.
Only answer e to j. I already have an answer from a to d.

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