2.32 The following are the grades that 50 studentsobtained 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 |
Convert the distribution from classes 30-39, 40-49,50-59, …, and 90-99 into cumulative “less than†distribution,beginning with “less than 30â€.
2.34The following are the miles per gallon obtained with40 tankful of gas:
24.1 | 25.0 | 24.8 | 24.3 | 24.2 | 25.3 | 24.2 | 23.6 | 24.5 | 24.4 |
24.5 | 23.2 | 24.0 | 23.8 | 23.8 | 25.3 | 24.5 | 24.6 | 24.0 | 25.2 |
25.2 | 24.4 | 24.7 | 24.1 | 24.6 | 24.9 | 24.1 | 25.8 | 24.2 | 24.2 |
24.8 | 24.1 | 25.6 | 24.5 | 25.1 | 24.6 | 24.3 | 25.2 | 24.7 | 23.3 |
Group these figures into a distribution having theclasses 23.0-23.4, 23.5-23.9, 24.0-24.4,24.5-24.9, 25.0-25.4, and 25.5-25.9.
b) Convert the distribution obtained in part (a) into acumulative \"or more\" distribution, beginning with\"23.0 or more\" and ending with \"26.0 or more.\"
