Question

Section 3-2 Measures of Central Tendency 111 Find the (a) mean, (b) median, (e) mode, and d) midrange for the distances of the home runs for obtained. (The data in this exercise will be used in Exercise 20 in Section 3-3.) and Sosa, using the data in Exercise 18 in Class boundaries Compare the means. Decide if the means are anproximately equal or if one of the players is hitting nger home runs. Use the individual data values 12.5-17.5 17.5-22.5 11. These data represent the number of traffic fatalities for two specific years for 27 selected 27.5-32.5 2 tes. Find the (a) mean, ) median, (c) mode, and d) midrange for each data set. Are the four measures average for fatalities for year I the same as those for year 2? (The data in this exercise will be used in 15. The data show the number of murders in 25 selected cities in a given state Exercise 15 in Section 3-3.) 160-222 223-285 286-348 349-411 412-474 475-537 538-600 970 1430 4192 1586 215 620 480 485 0 1555 180 1160 3360 Do you think that the men is the het average for these dataEx information in the exerc in Section 3-3.) 6 Souroe: USA TODAY 16. Find the mean and modal For Exercises 12 through 21, find the (a) mean and (b) modal class distributions in Exercises 8 a Are the "average" reactions thi 12. For 108 randomly selected college students, this exam score frequency distribution was obtained. (The data in this exercise will be used in Exercise 18 in Section 3-3.) 17. Eighty randomly selected lightbulbs were tested to determine their lifetimes (in hours). This frequency distribution was obtained. (The data in this exercise will be used in Exercise 23 in Section 3-3.) Class limits Frequency Class boundaries Frequency 52.5-63.5 63.5-74.5 74.5-85.5 85.5-96.5 96.5-107.5 107.5-118.5 108-116 12 25 18 28 13. The scores for the LPGA-Giant Eagle were Frequency 18. These data represent the net worth (in millions of 202-204 205-207 dollars) of 45 national corporations. Class limits Frequency 214-216 217-219 Source: www.LPGA.com 10 . Thirty automobiles were tested for fuel efficiency (in miles per gallon). This frequency distribution was

only the questions with ticks, that is question 13 and 14.

Answer 1