Illustration 10.21. The values of the arithmetic mean and thestandard deviation of the following frequency distribution of acontinuous variable derived from short-cut method are 135.3 lbs. and9.6 lb. respectively.-4-3 -2-112TotalFreq.58.18221380Determine the actual class interval.34

Answered: Image /qna-images/answer/a5405357-8caa-49e8-8dce-d5e9310d2f28.jpg

Answered: Illustration 10.21. The values of the…

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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Develop a frequency distribution for the variable "Yearly Salary." Start with your Bin with 40,000 and increment it by 15,000 up to 130,000
3:34 İ. Construct a simple frequency distribution for grouped data; display your findings in a table (number of intervals should be 5) ii. Add a column to your table with the cumulative frequency (bottom up). iii. Add a column to your table with the relative frequency. iv. Add a column to your table with the relative percent. v. Add a column to your table with the cumulative percent. vi. Construct a histogram that distributes the intervals along the horizontal scale (x-axis) and list the frequency of scores in each interval on the vertical scale vii. Construct an Ogive for this data. Grade 95 94 65 77 69 45 54 88 75 39 15 56 63 93 84 70 63 52 79 81 87 69 99 48 65 83 44 5G 91 35 57 60
Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 47.1 miles per hour. 58 - 61 Speed (miles per hour) Frequency 42 - 45 29 46 - 49 14 50 - 53 54 - 57 3 ..... The mean of the frequency distribution is miles per hour. (Round to the nearest tenth as needed.) Which of the following best discribes the relationship between the computed mean and the actual mean? O A. The computed mean is close to the actual mean because the difference between the means is more than 5%. O B. The computed mean is not close to the actual mean because the difference between the means is more than 5%. O C. The computed mean is close to the actual mean because the difference between the means is less than 5%. O D. The computed mean is not close to the actual mean because the difference between the means is less than 5%.
9. Frequency distributions may be compiled for variables measured at which level? a. nominal b. ordinal c. interval-ratio |d. all of the above |10. Cumulative frequencies and cumulative percentages allow a rescarcher to a. be sure the column totals are correct b. tell at a glance how many cases fall above or below a given category |c. show the accuracy of his or her findings d. all of the above 11. For a single variable measured at the nominal level, an appropriate and helpful graph to create would be a. a pie chart b. a histogram c. a frequency polygon |d. a bivariate table 12. If you were studying the color of movie stars' eyes as a variable, what measure of central tendency would be most appropriate to summarize data? a. median b. mode c. mean d. none of the above |13. If you have an even number of scores in a distribution and you arrange them from high to low, the median is a. the middle score |b. the average of the two middle scores c. the average of the highest and lowest scores…
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to Pa1, the 91st percentile. This is the temperature reading separating the bottom 91% from the top 9%. Click to view page 1 of the table Click to view page 2 of the table. Which graph represents Pa,? Choose the correct graph below. OD. Oc. OB. OA. Ay The temperature for P91 is approximately . (Round to two decimal places as needed.) XLSX Click to select vour answerls). 33283.xls Exit Honorlock 22 MacBook Air 吕0 000 000 F4 F3 F6 F7 F8 F9 FIC #3 2$ * 3 4 5 6 7 8 E R Y U
1:15 (a) Which variable is the explanatory variable? OA. One of the biggest factors in determining the value of a home is the square footage. The accompanying data represent the square footage and selling price (in thousands of dollars) for a random sample of homes for sale in a certain region. Complete parts (a) through (h) below. Click the icon to view the housing data. Square Footage Selling Price (b) Draw a scatter diagram of the data. Choose the correct scatter diagram below. Ay 4500- 000 1000 mylab.pearson.com/ + ® : 3 4500 Data Table Q Square Footage, x 2148 3231 1177 1988 3064 2735 4146 2215 2625 1629 1773 3887 Print ||| OB. r= 0.899 (Round to three decimal places as needed.) = AX 4500- 1000+++ 150 750 Q (c) Determine the linear correlation coefficient between square footage and asking price. Done Ay 750- Vo) 1 LTE2 150- O 1000 Selling Price ($000s), y D 371.1 382.2 197.6 339.9 614.9 364.7 632.7 377.7 427.5 285.9 268.9 701.4 4500 .... .... Q X D. Ay 750- 41% 150+ 1000 4500
Match each Notation with its Meaning. Notation Meaning a. sample proportion b. the proportion in Ho C. population proportion d. population mean e. sample standard deviation f. sample variance g. population standard deviation h. population variance Po i. sample size • j. population size k. sample mean
Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 52.5 degrees. Low Temperature (o F) 40 - 44 45 - 49 50 - 54 55 - 59 60 – 64 D Frequency 2 9. ... The mean of the frequency distribution is degrees. (Round to the nearest tenth as needed.) Which of the following best describes the relationship between the computed mean and the actual mean? O A. The computed mean is close to the actual mean because the difference between the means is more than 5% of the actual mean. B. The computed mean is not close to the actual mean because the difference between the means is less than 5% of the actual mean. C. The computed mean is not close to the actual mean because the difference between the means is more than 5% of the actual mean. D. The computed mean is close to the actual mean because the difference between the means is less than 5% of the actual mean.

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