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- 20. Represent the following data by means of histogram. Weekly wages No. of workers Weekly wage No. of workers 7 30 40 40 -60 60 80 10-15 19 12 15-20 12 27 20-25 8 15 25-304.- For the following data set 10, 7, 6, k, 4, 7, 1, 10. Find the value of k so that (a) X = 6.25 (b) X = 7.5 Villalobos 2020 22 (c) M = 7 (d) MR = 10 CHAPTER 3. DATA DESCRIPTION7: A teacher desires to know whether the typing speed of a Comsci student (in words per minute) is related to the time (in hours) that it takes the student to learn to use a new word-processing program. The data are shown below. 45 68 85 67 SPEED 69 45 58 55 67 75 94 TIME 56 78 68 89 92 67 ,54 If there is a significant relationship, predict the time it will take the average student who has a typing speed of 72 words per minute to learn the word-processing program.
- Example 51. Compute D; of the following data: 13, 14, 7, 12, 9, 17, 8, 10, 6, 15, 18, 21, 20Make a frequency graph with Price catergories and order size. From $0-100, $100-200, $200-300 From Small Medium Large Order Received Shipped Order Size Returned 2-Jan 3-Jan $ 296.04 No 3-Jan 13-Jan $ 51.65 No 4-Jan 18-Jan $ 156.27 Yes 10-Jan 16-Jan $ 206.32 No 11-Jan 14-Jan $ 96.47 No 13-Jan 20-Jan $ 272.55 No 13-Jan 23-Jan $ 271.16 No 14-Jan 28-Jan $ 86.52 Yes 17-Jan 17-Jan $ 58.02 Yes 17-Jan 27-Jan $ 126.95 No 17-Jan 1-Feb $ 173.59 Yes 24-Jan 29-Jan $ 192.43 No 25-Jan 4-Feb $ 280.50 Yes 26-Jan 28-Jan $ 20.35 No 30-Jan 30-Jan $ 233.56 No 3-Feb 5-Feb $ 29.88 No 6-Feb 17-Feb $ 122.94 Yes 6-Feb 14-Feb $ 280.14 No 6-Feb 8-Feb $ 41.25 No 11-Feb 28-Feb $ 204.34 Yes 11-Feb 15-Feb $ 30.34 No 12-Feb 24-Feb $ 18.85 No 12-Feb 12-Feb $ 250.66 No 14-Feb 16-Feb $ 249.50 No 15-Feb 3-Mar $ 54.22 Yes 15-Feb 24-Feb $ 216.86 No 17-Feb 3-Mar $ 72.11 Yes 21-Feb 10-Mar $ 273.03 Yes…8. Find Q.D. and its coefficient from the following data. Class 130- 134 160- 155- 159 12 135- 140- 140- 145- 150- Interval 139 164 144 21 149 154 Frequency 3. 12 28 19 5
- 12. MS. Pettipiece wants to see if there is correlation between the students overall Data mark (in percent) in his class and the Grade 11 math mark (in percent). The following data was collected and graphed/ Scatter Plot Collection 1 Collection 1 100 Grade11 Data 90- 67 71 60 79 80- 80 93 :- 70- 69 72 74 66 60- 9. 86 79 50 7 86 89 40 78 67 90 91 55 60 65 70 75 80 85 90 95 Grade11 10 63 70 201 10- 11 72 63 12 76 0- 13 70 75 -10- 14 84 86 -20 15 55 43 55 60 65 70 75 80 85 90 95 Grade11 - Data = 0.866Grade11 + 11: r= 0.50 Discuss the correlation between the Data mark and the Grade 11 mark. Make sure to reference the coefficients of correlation and/or determination in your discussion. Residual DataA 7. The analyst in the Dorben Company made 10 independent time studies in the hand paint- spraying section of the finishing department. The product line under study revealed a direct relation between spraying time and product surface area. The following data were collected. Study No. 1 2 3 4 5 6 8 9 10 Surface Area 170 12 150 41 130 50 70 105 95 (sq. inches) Standard Time (hours) 0.32 0.11 0.31 0.14 0.27 0.18 7 120 0.24 0.23 0.25 (7a) Compute the slope and intercept constant using regression line equations. (7b) What is the correlation coefficient? (7c) How much spray time would you allow for a new part with a surface area of 250 sq. inches? 0.223. Calculate mean and median of the following. Income (Rs) 10-20 20-30 30-40 40-50 50-60 60–70 No. of workers: 15 20 20 10 5
- answers only. Which of the following study is Inferential Statistics? a. 35% of the Enrolled Students in Maharlika University are Solo Parents. b. The market researcher of a manufacturing company constructs a graph showing the fluctuations in sales for a major product line during the past two years. c. The guard on duty recorded the students who came in with above 37.5 body temperature d. The manager of a department store records the number of buying customers daily for 7 consecutive weeks and then estimates the average number of buying customers for the following weeks. 2. What is the sample size of a certain study if the population size is 1,000,000 and 10% margin of error are expected? a.400 c,200 b.300 d.100 3.Which of the following examples is secondary data? a.Direct Interview c.journals b.Indirect or Questionnaire d.ObservationReview the chart. Visits per 100 people 800 700 600 500 400 300 200 100 0 Under 15 Visits to Doctor by Age-Group 15-24 © 2019 StrongMind A column graph as shown. 25-44 45-64 Age Group 11 64-74 75 and over Which conclusions are true based on the chart? Select all that apply. People between 64 - 74 made half as many visits as the people aged 15 - 24. Overall, older people and children visited doctor's offices most often. The number of visits decreased with age. The people under 15 years of age visited the doctor less often as the people aged 25 - 44. The chart shows the number of people who visited doctor's offices. People under 15 years of age made about 300 visits per 100 people per year.Example 23. Draw less than and more than ogive for the data given biow. No. of Companies Profits No. of Companies Profits (Rs. Lakhs) (Rs. of Lakhs) 10-20 6. 60-70 16 20-30 8. 70-80 8 30-40 12 80-90 40-50 18 90-100 50-60 25