Wetlands offer a diversity of benefits. They provide a habitat for wildlife, spawning grounds for U.S. commercial fish, and renewable timber resources. In the last 200 years, the United States has lost more than half its wetlands. Environmental Almanac gives the percentage of wetlands lost in each state in the last 200 years. For the 30 of the lower 48 states, the percentage loss of wetlands per state is as follows. 20 51 35 42 9 83 50 60 27 71 48 68 59 42 87 90 38 50 45 50 27 37 35 30 55 59 35 45 33 89 Make a stem-and-leaf display of these data. (Use the tens digit as the stem and the ones digit as the leaf. Enter NONE in any unused answer blanks.) Percent of Wetlands Lost How are the percentages distributed? Is the distribution skewed? Are there any gaps? (Select all that apply.) There is a gap showing that none of the lower 48 states has lost from 60% to 69% of its wetlands. These data are strongly skewed left. There is a gap showing that none of the lower 48 states has lost from 10% to 19% of its wetlands. The percentages are concentrated from 60% to 90%. There are no gaps in the data. The percentages are concentrated from 20% to 60%. These data are fairly symmetric, perhaps slightly skewed right.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
Wetlands offer a diversity of benefits. They provide a habitat for wildlife, spawning grounds for U.S. commercial fish, and renewable timber resources. In the last 200 years, the United States has lost more than half its wetlands. Environmental Almanac gives the percentage of wetlands lost in each state in the last 200 years. For the 30 of the lower 48 states, the percentage loss of wetlands per state is as follows.
| 20 | 51 | 35 | 42 | 9 | 83 | |
| 50 | 60 | 27 | 71 | 48 | 68 | |
| 59 | 42 | 87 | 90 | 38 | 50 | |
| 45 | 50 | 27 | 37 | 35 | 30 | |
| 55 | 59 | 35 | 45 | 33 | 89 |
Make a stem-and-leaf display of these data. (Use the tens digit as the stem and the ones digit as the leaf. Enter NONE in any unused answer blanks.)
| Percent of Wetlands Lost | |
How are the percentages distributed? Is the distribution skewed? Are there any gaps? (Select all that apply.)
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