question archive The following are the grade that 50 students obtained on an accounting test: 73 65 82 70 45 50 70 54 32 75 75 67 65 60 75 87 83 40 72 64 58 75 89 70 73 55 61 78 89 93 43 51 59 38 65 71 75 85 65 85 49 97 55 60 76 75 69 35 45 63 (a) Show a stem-and-leaf display of these values Use the tens digit to form the stem (b) Group these grades into a distribution having the classes 30-39, 40-49, 50-59, , and 90-99 (c) Convert the distribution obtained in part (b) into a cumulative “less than” distribution, beginning with “less than 30“ 2) The following are the miles per gallon obtained with 40 tankfuls of gas: 241 250 248 243 242 253 242 236 245 244 245 232 240 238 238 253 245 246 240 252 252 244 247 241 246 249 241 258 242 242 248 241 256 245 251 246 243 252 247 233 (a) Group these figures into a distribution having the classes 230-234, 235-239, 240-244, 245-249, 250-254 and 255- 259 (b) Convert the distribution obtained in part (a) into a cumulative “or more” distribution, beginning with “230 or more” and ending with ” 260 or more

Subject:StatisticsPrice: Bought3

The following are the grade that 50 students obtained on an accounting test:

73 65 82 70 45 50 70 54 32 75

75 67 65 60 75 87 83 40 72 64

58 75 89 70 73 55 61 78 89 93

43 51 59 38 65 71 75 85 65 85

49 97 55 60 76 75 69 35 45 63

(a) Show a stem-and-leaf display of these values Use the tens digit to form the stem

(b) Group these grades into a distribution having the classes 30-39, 40-49, 50-59, , and 90-99

(c) Convert the distribution obtained in part (b) into a cumulative “less than” distribution, beginning with “less than 30“

2) The following are the miles per gallon obtained with 40 tankfuls of gas:

241 250 248 243 242 253 242 236 245 244

245 232 240 238 238 253 245 246 240 252

252 244 247 241 246 249 241 258 242 242

248 241 256 245 251 246 243 252 247 233

(a) Group these figures into a distribution having the classes 230-234, 235-239, 240-244, 245-249, 250-254 and 255- 259

(b) Convert the distribution obtained in part (a) into a cumulative “or more” distribution, beginning with “230 or more” and ending with ” 260 or more