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English > Maths > All > Statistics

Question

Level

Action

If $$\bar{x}$$ represents the mean of $$n$$ observations $$x_{1},x_2\cdots, x_n $$,
then value of !......

Level 1

If each observation of the data is increased by $$5$$ , then their mean......

Level 1

Let $$\bar{x}$$ be the mean of $$x_1, x_2, \ldots, x_n$$ and $$\bar{y}$$ the mean of $$y_1, y_2, \ld......

Level 1

The mean of $$100$$ observations is $$50 $$. If one of the observations which were $$50$$ is replace......

Level 1

Sum of all values of variable divided by the number of values is called the __......

Level 1

Mean of $$15$$ observations is $$23$$ . If each observation is multiplied by $$2,$$ find new mean.......

Level 1

For the given data : $$11,15,17, y+1,19, y-2,3 ;$$ if the mean is $$14,$$ find the value of $$y$$......

Level 1

Median of the given data is
$$144,145,147,148,149,150,152,155,160$$......

Level 1