10:067 Classwork 2.5 an... Math 159 Classwork 2.5 and 2.6 (Refer to Ch 2 classwork data in google sheets) Name: 1) Given below are hourly salary, in dollars, of eight employees in a company. 10, 11, 15, 18, 21, 30, 30, 120 a) Is there a value that is very different from the rest? What is the value? b) Find the mean, median, mode and midrange. Use "Statdisk/data/Explore data" Round to 1 decimal place mean (x) = median = mode = midrange = c) Would mean or median be a better measure of center for the employees? Explain. 2) Below is the hourly salary, in dollars, of a sample of eight employees who volunteer to be included in a salary survey: 12, 14, 10.5, 18, 20, 15, 10, 10 a) Find the mean, median, mode and mid-range of the salary of the eight employees. Round to 2 decimal places. mean = median = mode = midrange = b) Can the above mean (x) give us an estimate of mean (#) of all employees in the company? Why or why not? 3) Following are the numbers in the jersey uniform of a team of basketball players. 10, 23, 56, 11, 18, 90, 27, 99, 80, 56, 43, 67 a) Find the mean (x) , median, mode and midrange of the data. Round to 1 decimal place. mean (x) = median = mode = midrange = b) Are any of the measure of centers useful? Explain. 5) The frequency distribution below summaries IQ scores of a sample of children living in a low lead area. 1Q score Freq. 50 - 69 70 - 89 12 90 - 109 110- 129 130 - 149 a) Calculate midpoint of each class and use them to find the grouped mean IQ score. Use Libretexts GFDT mean and SD calculator. Round mean to one decimal place. Mean = b) Will the grouped mean the same as the mean calculated using the actual data? (select one answer.) i) Yes, because they are based on the same data. ii) No, grouped mean use midpoint to approximate the real data. iii) No, grouped mean is more accurate. 6) Given the histogram below: a) Would the mean or median be a better measure of center? b) Would the mean or median be larger or are they the same? 7) Given a histogram below: a) Would the mean or median be a better measure of center? b) Is the mean or median larger or are they the same? 8 0= 2 O= Dashboard Calendar To Do Notifications Inbox10:067