<span>People experiencing a depressed hopelessness often have reduced disease-fighting immune systems than optimistic people. The people they are also some of the most frustrating feelings that depressed individuals experience. Research on the cognitive theory of depression has shown that people who are depressed struggle with feelings of hopelessness and helplessness more so than people who are not depressed. So they have reduced disease-fighting immune system.</span>
Scientist use it so all the scientific experiments are conducted with the same weights and measures.
The correct answer is the first one
Answer:
Histograms are common, as are frequency polygons. Frequency polygons are a graphical device for understanding the shapes of distributions. They serve the same purpose as histograms, but are especially helpful in comparing sets of data.
