Search results
Results From The WOW.Com Content Network
Reliability does not imply validity.That is, a reliable measure that is measuring something consistently is not necessarily measuring what is supposed to be measured.
Often discussed in tandem with KR-20, is Kuder–Richardson Formula 21 (KR-21). [4] KR-21 is a simplified version of KR-20, which can be used when the difficulty of all items on the test are known to be equal.
It had been established that the ideal size of a Brinell impression was 3 ⁄ 8 of the ball diameter. As two tangents to the circle at the ends of a chord 3 d /8 long intersect at 136°, it was decided to use this as the included angle between plane faces of the indenter tip.
The 2020–21 Chicago Blackhawks season was the 95th season for the National Hockey League franchise, established on September 25, 1926. [1] Jeremy Colliton led the Blackhawks in his second full year as head coach.
[3] [4] It was renamed Xe Services in 2009, and was again renamed to Academi in 2011, after it was acquired by a group of private investors. [5] In 2014, Academi merged with Triple Canopy to form Constellis Holdings. [6] [7] [8] Constellis and its predecessors provide contract security services [9] to the United States federal government.