In the frequency distribution X f 10 1 9 2 8 4 7 3 6 2 What is the sum of(X - 1)
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In the frequency distribution
X f
10 1
9 2
8 4
7 3
6 2
What is the sum of(X - 1)
The given data shows the frequency distribution.
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- The Table below shows the average score of the150 students sampled from the University of the East Europe in the academic year 2020/2021. Score (out of 100) Number of students 40-49 19 50-59 32 60-69 49 70-79 29 80-89 21 Given that Class Frequency 40 - 49 19 50 - 59 32 60 - 69 49 70 - 79 29 80 - 89 21 Class(1) Frequency (f)(2) Mid value (x)(3) f⋅x(4)=(2)×(3) cf(6) 40-49 19 44.5 845.5 19 50-59 32 54.5 1744 51 60-69 49 64.5 3160.5 100 70-79 29 74.5 2160.5 129 80-89 21 84.5 1774.5 150 n=150 ∑f⋅x=9685 Use your results above to comment on the shape of the distribution. Give a reason for you answer.Example 6.2 Find the range for the following frequency distribution: Frequency 7 30 Size of Item 20-40 40-60 60-80 80-100 100-120 Total 3 17 5 70Group A5- 5 86- 1 3 77- 0 1 1 2 5 6 7 8 8 88- 1 2 3 3 3 4 4 5 6 89- 0 2 710- 0 0 Key: 5|5 represents 55 Group B5- 76- 4 87- 1 2 2 5 68- 0 2 4 5 5 5 7 79- 1 3 4 5 6 7 7 8 8 9 910- 0 0 0Key: 5|7 represents 57 1. Calculate the mean, median, range, and interquartile range for each data set. 2. Using the appropriate measures, compare the center and variability of the two groups of students. Explain your reasoning based on the shapes of the distributions.
- Below is the frequency distribution showing the result of an IQ test of a group of| students in a certain college. Copy the table and fill all the columns for each category. CI [x - X] f(A4) The table below shows the frequency distribution of the monthly salaries of some orderlies at the Accra Technical University Medical Centre. Salary (GH¢) 250 – 260 – 270 – 280 – 290 – 300 – 310 – 259 269 279 289 299 309 319 No. of 8 10 16 14 10 5 2 orderlies Use it to determine each of the following: (a) The lower limit of the sixth class. (b) The upper limit of the fourth class. (c) The class mark of the third class. (d) The class boundaries of the fifth class. (e) The class size of the second class.А B Overtime earnings 1 (OMR) 13 No. of employees (f) 2 0s 10 3 10 s 20 11 4 20 s 30 5 30 s 40 25 18 6 40 < 50 7 50 s 60 2 8 8 60 s 70 9 70 < 80 10 80s 100 8 100 11 sum From the table above B. Construct a less than cumulative frequency curve for the data above. c. Use the cumulative frequency graph to estimate the median.Q2: According to the following frequency distribution table and raw :data Frequency Distribution Table Raw Data Class f 58 | « • * * 56 69 63 62 71 82 79 90-99 45 67 75 77 72 63 78 94 80-89 70-79 11 66 50 67 47 60 74 57 66 60-69 15 53 74 71 58 55 54 80 70 50-59 9. 40-49 64 60 51 61 68 64 72 66 Q2 (d): According to the above raw data, the value of mean deviation * :(MD) is 8.0562 O 8.1513 O 8.1633 O none of all above OHigh temperature in a certain city for the month of July has a uniform distribution over the interval 7070 FF and 9090 FF What is the average temperature in this city in July (Enter only the numerical value)? What is the temperature which exceeded by the temperature on 90%days in July (Enter only the numerical value)?The class frequency distribution table is Class Interval Frequency 80 - 155 7 156 - 231 5 232 - 307 5 308 - 383 5 384 - 459 6 460 - 535 1 536 - 611 1 612 - 687 1 688 - 763 4 764 - 839 2 840 - 915 1 916 - 991 2 Total 40For the following frequency distribution find the mode. Class 3-6 6-9 9-12 12-15 15-18 18-21 21-24 Frequency 2 10 23 21 12 3Class Intervals LL-UL 24-29 30-35 34-41 42 43 48-53 54-59 60-65 66-71 ST Table 1. Frequency Olstribution of the ages of forty-five residents with comorbidity in Barangay A who have already been vaccinated Frequency cumulative f FrequencyRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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