In one sentence, describe what the following article is about: Take a piece of rectangular paper and place it in front of you so the paper is in portrait format, with the longer edges to the side. Fold it in half lengthwise from top to bottom, so that the fold is at the "top" of the piece of paper. Your paper ship is now complete! It's ready to take out for a sail on the storm-tossed seas- O.K., maybe just the backyard kiddie pool.
Summary: Fold paper in half. Look at your creation.

In one sentence, describe what the following article is about: Early in the spring, sow single seeds in small pots meant for starting seedlings. Place the pots in full sunlight, moisten the soil daily, and keep them at a temperature of 77F (25C). Once they have sprouted, they do not need to be kept as warm. Lower the temperature to 70F (21C). When the seedlings are about a foot tall, and the weather outside has warmed to spring, it's time to plant them outside in a nursery bed. Dig a hole about 3 inches deep to allow them to continue growing. When the plants begin producing flowers, you'll be able to tell which are male and which are female. The male plants have large, long flowers, and the females have smaller flowers. Pull up the female plants and compost them. Let the male plants complete their growing cycle and overwinter in the nursery bed. The following spring, one year from germination, they have reached the same maturity as one-year crowns, and are ready to be transplanted to the permanent bed. Follow the steps below to continue growing the plants. Be sure to dig the plants up while they are still dormant. Don't wait until they start their second growing season, or they will suffer from transplant shock.
Summary: Start the seeds indoors. Lower the temperature when the seeds sprout. Plant the seedlings outside. Weed out the female plants. Transplant the male plants to the permanent bed.

In one sentence, describe what the following article is about: To find the standard error, first you must determine the standard deviation (because the standard deviation, s, is part of the standard error formula). Start by finding the average of your sample values. Sample mean is expressed as the arithmetic mean of measurements x1, x2, . . . xn. It is calculated with a formula that is shown above. For example, say you need to calculate the standard error of a sample mean for the weight measurements of five coins, as listed in the table below:You would calculate the sample mean by plugging the weight values into the formula, like this: Once you have the sample mean, you can expand your table by subtracting it from each individual measurement, then squaring the result. In the example above, your expanded table would look like this: The total deviation is the average of these squared differences from the sample mean. Add your new values together to determine it. In the example above, you would calculate as follows:This equation gives you the total quadratic deviation of measurements from the sample mean. Note that the sign of the differences is not important. Once you know the total deviation, you can find the average deviation by dividing by n -1. Note that n is equal to the number of measurements. In the example above, you have five measurements, so n 1 would equal 4. You would calculate as follows: You now have all the necessary values to use the formula for standard deviation, s. In the example above, you would calculate standard deviation as follows:Your standard deviation is therefore 0.0071624.
Summary:
Calculate the sample mean. Subtract the sample mean from each measurement and square the value. Find the total deviation of your measurements from the sample mean. Calculate the average quadratic deviation of your measurements from the sample mean. Find the standard deviation.