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Day12
1.昨天的prep错题整理(1番茄)
2. bibble:Coordinate Geometry(2番茄)
3. prep07 112-148 (3番茄)-70min
正确率:27/37
4. prep错题整理 (1番茄)
5. 一直不懂的标准方差:(1番茄)
Standard Deviation
On the test, you are not expected to know the definition of standard deviation. However, you may bepresented with the definition of standard deviation and then be asked a question based on the definition. Tomake sure we cover all possible bases, we’ll briefly discuss this concept.
Standard deviation measures how far the numbers in a set vary from the set’s mean. If the numbersare scattered far from the set’s mean, then the standard deviation is large. If the numbers are bunched upnear the set’s mean, then the standard deviation is small.
Example: Which of the following sets has the larger standard deviation?A = {1, 2, 3, 4, 5} B = {1, 4, 15, 21, 27}
6. 杨鹏长难句(1番茄)
7. OG语法(1番茄)
!!!男盆友说每天10番茄,每天都有礼物~~~ (/≧▽≦)/喵喵喵~~突然有动力啦~~等礼物~~~ |
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