II. Age f x fd! < cf 11-20 21-30 7 Regd 31-40 12 1) Mean, Median, Mode 2) Quartiles, Q', Q², Q² 41-50 22 |-60 8 61-70 4
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- 4.- 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 DESCRIPTIONPlease help I'm confusedf Class Interval fx cf X- mean (x - mean)^2 f(x - mean)^2 Frequency Class Mark 95-99 3 90-94 85-89 10 80-84 15 75-79 23 70-74 11 65-69 60-64 4 N = Efx = Ef(x - mean)^2 =. The distribution of heart rates (in pulse/minute) of 80 random chosen or selected patients for clinical trials for a new anti-hypertensive is given above. What is the value of Efx= O a. 6526 Ob. 6265 Oc. 6256 O d. 6562
- 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.What are the measures of central tendency for this data setIn what way can probability or proportion be represented in terms of the distribution? Standard deviation None of these Z-score F-statistic
- 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] fnumber 24 onlyWhat would be the range and the inter-quartile range in these groups? and how did you figure it? Group 1: 0,0,0,0,1,1,1,2,2,3 Group 2: 0,0,1,1,1,2,2,2,3,36. Interval estimation when o is unknown (the data “Alcohol" is provided) Consumption of alcoholic beverages by young women of drinking age has been increas- ing in the United Kingdom, the United States, and Europe (The Wall Street Journal, Feb- ruary 15, 2006). Data (annual consumption in liters) consistent with the findings reported in The Wall Street Journal article are shown for a sample of 20 European young women. 266 82 199 174 97 170 222 115 130 169 164 102 113 171 93 93 110 130 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean annual consumption of alcoholic beverages by European young women.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 O512 257 321 289 140 374 697 1120 1407 425 526 indicates 3, 4", 6th and S7" digits of student ID number. (a) Compute the average profits of the 11 Arizona-based companies for the year 2019. (b) Which measure of dispersion is calculated using only two values? Why it is not suitable? (c) Calculate the three quartiles and interquartile range. Where does the value of 340 lie in the relation to these quartiles? (d) Using the above results, draw a box-and-whisker plot and comment on it. (e) Create a stem-and-leaf display of the data.