The mean score is 60 out of 100 and the standard deviation (in other words, the variation in the scores) is 15 marks (see our statistical guides, Measures of Central Tendency and Standard Deviation, for more information about the mean and standard deviation).
What Are the Six Different Types of Swimming Strokes? Swimming provides all-around, low-impact body conditioning as well as exciting competition. Competitive swim meets allow only four strokes -- butterfly, backstroke, breaststroke and the crawl. Two other strokes -- elementary backstroke and sidestroke -- contribute to swimming longer distances, as different sets of muscles are used. The fastest stroke for most swimmers is the front crawl.
A list of the different types of mermaids that exist in cultures around the world, includes artwork and information for each. Creatures by Type: Mermaids Overview - Beings with the upper body of a human and the lower body of a fish. Caesg - A being with an upper body that resembles a human while the lower body resembles a trout. Encantado - A dolphin-like being with the ability to shape shift into human form. Margygr - A monster with the head and torso of a woman and the tail of a fish.