The gross hourly earnings (in Rands) of a group of workers randomly selected from the payroll list of a largeindustrial company were organised into the following frequency distribution.IntervalsFrequency (f)Fmfxmm?fx m?(Hourly earnings)80 -< 100111190990810089100100 -< 1201627110176012100193600120 -< 1403057130390016900507000140 -< 1602380150345022500517500160 -< 18010901701700289002890009011800885001596200a) Calculate the median hourly earnings (rounded off to zero decimals).b) Calculate the mode (rounded off to two decimals).c) Calculate the standard deviation (rounded off to two decimals).d) Determine and interpret the 70th percentile (rounded off to two decimals).e) Calculate and interpret the skewness (rounded off to two decimals).

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Answered: The gross hourly earnings (in Rands) 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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A company’s raw data sample of weekly salaries (in dollars) is shown below. 210 370 530 370 740 530 370 530 210 370 1140 210 A frequency distribution of this data set, based on a single-value grouping, is presented below with a third column showing the xf-values—the class midpoint (which here is the same as the class) times the class frequency. Salary(x) Frequency(f) Salary*Frequency(xf) 210 3 630 370 4 1480 530 3 1590 740 1 740 1140 1 1140 (i). Use the raw data to obtain the sample standard deviation of the ungrouped data. Round your answer to two decimal places. (ii) Use the grouped-data formula to obtain the sample standard deviation of the grouped data in the frequency distribution. Round your answer to two decimal places (iii).Compare your answers in parts (i) and (ii).
Table 3 shows the distribution for the number of medical leaves (in days) taken within a certain period by 65 employees of accompany. Number of medical leaves Number of employees (days) 1-3 4 4 -6 7-9 8 10 - 12 12 13 - 15 18 16 - 18 11 19 - 21 Table 3: The number of medical leaves (in days) (a) Draw a cummulative frequency curve to illustrate the data. (Note : Use graph sheet) (b) Using the ogive in question 4(a), estimate the median and third quartile value. (c) Calculate the mean, and standard deviation from the data given in Table 3.
Please answer all the questions.
The following table shows a frequency distribution of the lifetimes of a number of radio tubes tested at the Brown Tube Company. What is the relative frequency of the fifth class (700 -< 799)? Lifetime Number of (hours) Tubes 300 -< 399 14 400 -< 499 46 500 -< 599 58 600 -< 699 76 700 -< 799 62 800 -< 899 67 900 -< 999 50 Select correct / closest choice. Select one: a. 0.089 b. 0.155 c. 0.155 d. 0.620 e. 0.166
Answer all the questions 1. a. The profits (in lakhs of rupees) of 20 companies for the year 2000-2009 are given below: 20, 22, 53, 49, 65, 39, 48, 67, 18, 16, 23, 37, 35, 49, 63, 57, 69, 25, 29, 58. i. Represent the above data in a frequency table using exclusive class interval. (6) Represent the above data in a histogram. (2) ii.
Average monthly wages (per employee) in 4 sectors of an economy are as follows: industry: 2000 dinars, building: 2200 dinars, agriculture: 1500 dinars, services: 1800 dinars. Number of people employed in the four sectors are 5 million, 2 million, 6 million, and 2 million, respectively. Using the concept of harmonic mean compute the average monthly wages in the economy under consideration.
1. Given the following frequency distribution, compute for the following: Class Intervals Frequency (f) (d) (fd) (F) 58- 59 10 60- 61 14 62- 63 26 64- 65 35 66- 67 23 68- 69 19 70- 71 15 72- 73 6 a. Mean b. Median c. Mode d. Quartile e. Quartile 3 f. Decile 7 g. Decile 8 h. Percentile 88
When looking at the chart in the image attached.Can you explain to me the thought process of finding and determining what the relative frequency of contracts involving fewer than 5 bidders would be and how that would be rounded up to 3 decimal places? Using frequency tables and relative frequency.

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