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...centre. Some kind of assessment of symmetry is possible, since symmetric data will produce a boxplot which is symmetric about the median. These particular data are not symmetric; they are right-skew, and in fact the sample skewness is 2.572. The corresponding lack of symmetry shows up in the boxplot: the right-hand section of the box is longer than the left. However, it...

...centre of the field of view (at any magnification) is a small cross. As explained below, the coordinates of this cross are given, allowing specific points in the image to be identified. The image can be manipulated either by zooming in and out, or by panning around the specimen at different magnifications. As the main image is zoomed or panned, the inset image in the top...

...researchers are investigating inflation...Unsolved problems in cosmology: 1 Cosmology today - Modern cosmology is based on the understanding that the Universe began in an event called the hot big bang, in which time and space were created, about 13.8 billion years ago. The Universe has cooled and space has expanded as time has progressed since then. The evidence for this...