TS ICET 2017
For the following questions answer them individually
In a frequency distribution the Arithmetic mean is 50 and the median is 52. Its mode is
If the Standard Deviation of n observations $$x_1, x_2, ....... x_n$$ is 17, then the Standrad Deviation of $$2x_1 - 15, 2x_2 - 15, ....., 2x_n - 15$$ is
The sum of 5 observations is 25 and the sum of their squares is 145, The standard deviation of these observations is
Out of 100 consecutive positive integers two are chosen at random. The probability that their sum is odd is
Three vertices out of six vertices of a regular hexagon are chosen at random. The probability that these verticesform an equilateral triangle is
A bag contains 4 Green, 6 Black and 7 White balls. If one ball is drawn from the bag at random,the probability thatit is either ablack ora white ball is
