Using the formula, Area of the triangle = 1/2 x base x height Let the base and altitude be 3x and 4x respectively. According to question, ⇒ 1/2 x base × altitude = 864 cm2 or, ⇒ 1/2 x (3x) x (4x) = 864 ⇒ 12x2 = 1728 ⇒ x2 = 1728/12 ⇒ x2 = 144 ⇒ x = √144 ⇒ x = 12 cm Altitude of a triangle = 4x = 4 × 12 cm = 48 cm
The probability of getting 9 cards of the same suit in one hand at a game of bridge is
If the sum of lower and upper qualities is 6 and quartile deviation is 1.5, then the value of coefficient of quartile deviation is
The limits of multiple correlation coefficient R1.23 are:
The coefficient of correlation is the _________ of coefficients of regression.
If the first quartile of data set 8,10,8,7,9 is 7.5, then the value of quartile deviation is
The Mean deviation about Median for the given data.
52, 56, 66, 70, 75, 80, 82 is:
For the random variable X with probability density function f(x) = (x−3)2 /5; x = 3, 4, 5, the variance of X is:
For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to:
Which option is incorrect for the component of ti.me series.
