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.
Swim training workouts are great for your health. These exercises work the entire body, increasing muscle strength, conditioning the cardiovascular system, improving flexibility and more. Not only are these workouts beneficial to your body, they are also very enjoyable to perform.t is not like other types of exercises or sports that only focus on a particular part of the body. Freestyle, backstroke and breaststroke are the most effective strokes to use in toning your entire body. Unlike other types of workout, there is a lower risk for injuries while engaged in this sport.