Economic control of quality of manufactured product
Мисс Флетчер, как вы полагаете, если это не ключ, то почему Танкадо обязательно хотел его отдать. Если он знал, что мы его ликвидируем, то естественно было бы ожидать, что он накажет нас, допустив исчезновение кольца.
В разговор вмешался новый участник.
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Data can be shown in a variety of ways including graphs, charts, and tables. A stem-and-leaf plot is a type of graph that is similar to a histogram but shows more information by summarizing the shape of a set of data the distribution and providing extra detail regarding individual values. Stem-and-leaf plots are great organizers for large amounts of information. Stem-and-leaf plot graphs are usually used when there are large amounts of numbers to analyze.
Some examples of common uses of these graphs are to track a series of scores on sports teams, a series of temperatures or rainfall over a period of time, or a series of classroom test scores. Check out this example of test scores:. The Stem shows the tens column and the leaf. At a glance, you can see that four students got a mark in the 90s on their test out of When you count the total number of leaves, you know how many students took the test.
Otherwise, you would have a long list of marks to sift through and analyze. You can use this form of data analysis to find medians, determine totals, and define the modes of data sets, providing valuable insight into trends and patterns in large data sets. In this instance, a teacher would need to ensure that the 16 students who scored below 80 truly understood the concepts on the test.
Because 10 of those students failed the test, which accounts for almost half of the class of 22 students, the teacher might need to try a different method that the failing group of students could understand.
For instance, if you want to compare the scores of two sports teams, you can use the following stem-and-leaf plot:. The tens column is now in the middle column, and the ones column is to the right and left of the stem column. Sometimes, when the record for wins is tied within a football league, the higher-ranked team will be determined by examining data sets that are more easily observable, including the median and mean of the two teams' scores.
Then, determine the median for the temperatures:. Once you've sorted the data by value and grouped them by the tens digit, put them into a graph called "Temperatures. Since 50 was the lowest temperature of the month, enter a 5 in the tens column and a 0 in the ones column, then observe the data set for the next lowest temperature: Find all of the temperatures that were in the 60s, 70s, and 80s and write each temperature's corresponding ones value in the ones column.
To find the median, count all the days in the month, which in the case of June is Divide 30 by two, yielding 15, count either up from the lowest temperature of 50 or down from the highest temperature of 87 until you get to the 15th number in the data set, which in this case is This is your median value in the data set. Share Flipboard Email. Deb Russell. Math Expert. Deb Russell is a school principal and teacher with over 25 years of experience teaching mathematics at all levels.