The geometric mean of 2, 4, 16 and 32 is
The strength of seven colleges in a city are 385,1748,1343,1935,786,2874 and 2108. Then the median strength is
The mean and median of 100 items are 50 and 52 respectively. The value of the largest item is 100. It was later found that it is actually 110. Therefore, the true mean is ___ and the true median is _____
10 is the mean of a set of 7 observations and 5 is the mean of a set of 3 observations. The mean of a combined set is given by
A distribution with more than two modes is called
The algebraic sum of the deviations of a set of n values from their arithmetic mean is
When xi and yi are two variables (i=1,2,...,n) with geometric means G1 and G2 respectively then the geometric mean of xi/ yi is
The mean of 20 observations is 15. On checking it was found that two observations were wrongly copied as 3 and 6. If wrong observations are replaced by correct values 8 and 4, then the correct mean is
If each of a set of observations of a variable is multiplied by a constant (non-zero) value, the variance of the resultant variable
The standard deviation of a distribution is 5. The value of the fourth central moment μ4 in order that the distribution be mesokurtic should be
In a frequency curve of scores the mode was found to be higher than the mean. This shows that the distribution is
The probability of drawing any one spade card from a pack of cards is
A coin is tossed three times in succession, the number of sample points in sample space is
A single letter is selected at random from the word 'probability'. The probability that it is a vowel is
A number is chosen at random among the first 120 natural numbers. The probability of the number chosen being a multiple of 5 or 15 is