Recent questions tagged probability

If the ratio of mode and median of a certain data is 6:5 then find the ratio of its mean and median

asked Aug 27, 2015 by pady_1

2 answers

If the ratio of mean and median of a certain data is 2:3 then find the ratio of its mean and median

asked Aug 27, 2015 by pady_1

1 answer

Find The mean of first five multiples of 3

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1 answer

The mean weight of 8 numbers is 15, If each number is multiplied by 2 , what will be the new mean?

asked Aug 27, 2015 by pady_1

1 answer

Find the mean of all factors of 10

asked Aug 27, 2015 by pady_1

1 answer

Find the mean of first five natural numbers

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1 answer

If the mean of five observations $x,x+2,x+4,x+6,x+8$ is $11$, find the mean of first three observation

asked Aug 27, 2015 by pady_1

0 answers

the mean of 5 numbers is 18 . If one numbers is excluded , their mean is 16 . Find the excluded number

asked Aug 27, 2015 by pady_1

0 answers

which of the following is not the graphical representation of stastical data

asked Aug 27, 2015 by pady_1

1 answer

In 2002, the average age of students at UTC was 22 with a standard deviation of 3.96. In 2003, the average age was 24 with a standard deviation of 4.08. Inwhich year do the ages show a more dispersed distribution?

asked Aug 27, 2015 by pady_1

0 answers

The symbol \sigma is used to represent

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Which of the following symbols represents the standard deviation of thepopulation?

asked Aug 27, 2015 by pady_1

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The variance can never be

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When data are positively skewed, the mean will usually be

asked Aug 27, 2015 by pady_1

1 answer

The most frequently occurring value of a data set is called the

asked Aug 27, 2015 by pady_1

1 answer

The difference between the largest and the smallest data values is the

asked Aug 27, 2015 by pady_1

1 answer

The 75th percentile is referred to as the

asked Aug 27, 2015 by pady_1

1 answer

The median is a measure of

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0 answers

The median of a sample will always equal the

asked Aug 27, 2015 by pady_1

2 answers

The variance of a sample of 169 observations equals 576. The standard deviation of the sample equals

asked Aug 27, 2015 by pady_1

0 answers

Since the population size is always larger than the sample size, then the sample statistic

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1 answer

Which of the following provides a measure of central location for the data?

asked Aug 27, 2015 by pady_1

1 answer

The sum of the percent frequencies for all classes will always equal

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0 answers

Since the mode is the most frequently occurring data value, it

asked Aug 27, 2015 by pady_1

1 answer

In a five number summary, which of the following is not used for data summarization?

asked Aug 27, 2015 by pady_1

2 answers

If the mean of x+2, 2x+3, 3x+4 and 4x+5 is x+2 then find the value of x

asked Aug 27, 2015 by pady_1

1 answer

The mean deviation of \large\frac{a+b}{2} and \large\frac{a-b}{2} (where a and b>0) is

asked Aug 27, 2015 by pady_1

0 answers

The arethmetic mean and mode of the data is 24 and 12 respectively then the median of the data is

asked Aug 27, 2015 by pady_1

1 answer

The mean of first n odd natural numbers is $\large\frac{n^2}{81}$. Find n

asked Aug 27, 2015 by pady_1

0 answers

Range of 14,12,17,18,16 and x is 20 . Find x(x>0)

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The upper class limit of inclusive type class interval 10-20 is

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If the quartile deviation of a set of observations is 10 and the third quartile is 35, then first quartile is

asked Aug 27, 2015 by pady_1

0 answers

The median of 21 observations is 18. If two observations 15 and 24 are included to the observations then the median of the new series is

asked Aug 27, 2015 by pady_1

1 answer

If the difference of mode and median of a data is 24, then the diffrence of median and mean is

asked Aug 27, 2015 by pady_1

1 answer

Mean of a certain number of observations is m . If each observation is divided by $x(x\neq0)$ and increased by y, then the mean of new observation is

asked Aug 27, 2015 by pady_1

1 answer

The mean of first n natural numbers is \large\frac{5n}{9}. Find n

asked Aug 27, 2015 by pady_1

0 answers

If sum of the 20 deviations from the mean is 100, then the mean deviation is

asked Aug 27, 2015 by pady_1

1 answer

If the heights of five students in a class are 132cm,158cm,150cm 145cm and 155cm,then find their mean height.

asked Aug 27, 2015 by pady_1

0 answers

If the median of 33,28,20,25,34 and x is 29, then find the maximum possible value of x

asked Aug 27, 2015 by pady_1

0 answers

The mean of 8 observations was found to be 20 . Later it was detected that on eof the observations was found to be misread as 62. What is the correcr observation if the correct mean is 15.5 ?

asked Aug 27, 2015 by pady_1

1 answer

If lower and upper quartiles of the data are 23 and 25 respectively , then coefficients of quartile deviation is

asked Aug 27, 2015 by pady_1

1 answer

If the mean of 2,4,6,8 ,x and y is 5 then x+y is

asked Aug 27, 2015 by pady_1

0 answers

Mode of certain scores is x , If each score is decreased by 3 then mode of the new series is

asked Aug 27, 2015 by pady_1

1 answer

If mode and median of the certain scores are 2 and 2 then mean is

asked Aug 27, 2015 by pady_1

1 answer

If the mean of a,b and c is b ,then a+c in terms of b is

asked Aug 27, 2015 by pady_1

0 answers

The coefficient of range of the scores 1,2,3,4 and 5 is

asked Aug 27, 2015 by pady_1

0 answers

Mode of the scores 2,3,2,4,3,2,4,6 is

asked Aug 27, 2015 by pady_1

0 answers

Range of scores 27.35,47,36,25 and x where x<25 is 23, then x is

asked Aug 27, 2015 by pady_1

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If the lower boundary of a class is 35 and length of the class is 5, then upper boundary is

asked Aug 27, 2015 by pady_1

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In a class seven students got 90 marks each , the frequency of the observation 90 is

asked Aug 27, 2015 by pady_1

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