The following data gives the speeds of 15 cars, measured by radar, traveling on a certain highway. 72 79 61 68 78 69 72 80 76 72 79 68 79 96 71 (a) Calculate the value of the range. (b) What percentile rank is 78? Give an interpretation of this value. (c) Find the median, first quartile (Q1) and third quartile (Q3). (d) Find the value of the inter-quartile range (IQR). (e) Determine whether the distribution has outliers. (f) Construct a box-and-whisker plot for the data and comment on the shape of the distribution.

The data below are the frequency of cremation burials found in 17 archaeological sites. a. Obtain the​ mean, median, and mode of these data. b. Which measure of center do you think works best​ here?   81 69 46 48 526 33 32 265 2255   46 372 23 87 413 55 246 116         Question content area bottom Part 1 a. The mean is enter your response here. ​(Round to one decimal place as​ needed.) Part 2 The median is enter your response here. ​(Round to one decimal place as​ needed.) Part 3 Select the correct choice below and fill in any answer boxes within your choice.     A. The mode is enter your response here. ​(Round to one decimal place as​ needed.)   B. There is no mode. Part 4 b. Which measure of center works best​ here?     A. The mean works best. The mode is highly affected by the largest value and the median is well to the left of the​ distribution's center.   B. The mode works best. The median is…

Use a scatter plot to display the data shown in the table below. The data represents the number of students per teacher and the average teacher salaries​ (in thousands of​ dollars) in 10 school districts.   Number of Students per Teacher Average​ Teacher's Salary   17.2 28.6   17.8 46.6   18.2 32.1   17.4 27.6   18.4 39.8   17.6 32.8   15.0 49.5   17.5 38.4   13.7 42.1   18.0 32.4         1.Construct a scatter diagram.           2.Describe the relation between students per teacher and average teacher salary.     A. As the amount of students per teacher​ increases, the average teacher salary also increases.   B. As the amount of students per teacher​ decreases, the average teacher salary increases.   C. There appears to be no relation between students per teacher and average teacher salary.

Use a stem-and-leaf plot that has two rows for each stem to display the data, which represent the income (in millions) of 30 of the highest paid athletes. Describe any patterns. EM 37 36 44 50 35 58 56 67 48 63 46 37 77 45 34 44 43 81 53 38 73 34 38 87 34 53 41 42 45 58 Determine the leaves in the stem-and-leaf plot below. Key: 3|3= 33 Income (S millions) 4 . 8. 8. Enter your answer in the edit fields and then click Check Answer. Check Answer 1 part remaining Clear All 3.