Type 95 Heavy Tank into production. It proved to be a complicated design with poor mobility and had a lower top speed than desired. Modeled on German and Italian tank designs, this tank featured 3 turrets. Mounted in the central turret was the primary weapon of Type 95, a Type 94 7 cm tank gun specifically designed for it. The cannon could fire both Type 92 high-explosive shells and Type 95 armor-piercing shells. The gun elevation angle was 20 degrees and gun depression angle was -12 degrees. A 6.5 mm machine gun was also mounted in the main turret. Two addition turrets gave Type
Degrees of freedom (statistics) Gosset did not actually use the term 'degrees of freedom', he explained the concept in the course of developing what became known as Student's t-distribution. The term itself was popularized by English statistician and biologist Ronald Fisher, beginning with his 1922 work on chi squares. In equations, the typical symbol for degrees of freedom is "ν" (lowercase Greek letter nu). In text and tables, the abbreviation "d.f." is commonly used. R. A. Fisher used "n" to symbolize degrees of freedom but modern usage typically reserves "n" for sample size. Geometrically, the degrees of freedom can be interpreted as the dimension