What is Array in Statistics?

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ALOK_RAJ Asked Sep 27, 2023

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What is Statistics?

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The observations 29, 32 ,48, 50, x, x+2, 72, 78, 84 and 95 are arranged in ascending order. What is the value of x, if the median of the data is 63?

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In a class of 100 students, the average amount of pocket money is ₹35 per student. If the average is ₹25 for girls and ₹50 for boys, then the number of girls in the class is

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In a batch of 15 students, if the marks of 10 students who passed are 70,50,95,40,60,70,80,90,75 and 80 then the median marks of all the 15 students is

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Each observation of a raw data whose variance is $\sigma^2$, is multiplied by n. What is the variance of the new set?

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The algebraic sum of the deviations of 20 observations measured from 30 to 20 . What is the value of the mean of the observations?

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In a class of 50 students, 10 have failed and their average marks are 28 . The total marks obtained by the entire class are 2800 . The average marks of those who have passed are

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John Michael Asked Aug 12, 2023

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Mean of 100 items is 49 . It was discovered that three items which should have been 60,70 and 80 were wrongly read as 40,20 and 50 respectively. The correct mean is

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John Michael Asked Aug 12, 2023

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The mean of the values of 1,2,3,.......n with respectively frequencies x, 2x, 3x, ..........nx, is

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The mean of n items is $\bar{X}$. If the first term is increased by 1 , second by 2 and so on, then the new mean is

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If the mean of n observations $1^2, 2^2, 3^2, \ldots, n^2$ is $\frac{46 n}{11}$, then n is equal to

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If the median of x/5, x, x/4, x/2 and x/3, where x>0, is 8 then the value of x is equal to

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Chandan Asked Aug 6, 2023

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The arithmetic mean of data with observations a, a+d, a+2 d,$ \ldots$, a+2 m d, is

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What is Class-limits in Statistics?

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What is Class-interval in Statistics?

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What is a Non-Classified Data in Statistics?

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What is a Classified Data in Statistics?

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What is Secondary Data in Statistics?

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What is Primary Data in Statistics?

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Which one of the following statistical measures cannot determined graphically?

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सांख्यिकी किसे कहते हैं? Sankhyiki Kise Kahate Hain?

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Aayush Asked Feb 23

24 views

In $\triangle A B C$, if $\left|\begin{array}{lll}1 & a & b \\ 1 & c & a \\ 1 & b & c\end{array}\right|=0$, then $\sin ^2 A+\sin ^2 B+\sin ^2 C$ is equal to

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If $f(x)=\left\{\begin{array}{ll}\sin x \neq n \pi, n \in Z \\ 0, & \text { otherwise }\end{array}\right.$ and $g(x)=\left\{\begin{array}{ll}x^2+1, & x \neq 0,2 \\ 4, & x=0 \\ 5, & x=2\end{array}\right.$, then $\lim _{x \rightarrow 0} g\{f(x)\}$ is equal to

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What are the key statistics indicating the growth in India's trade with ASEAN?

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If $A=\left[\begin{array}{rr}1 & 2 \\ 3 & -5\end{array}\right]$, then $A^{-1}$ is equal to

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If $A=\left[\begin{array}{rr}r & -2 \\ 3 & 7\end{array}\right]$ and $A^{-1}=\left[\begin{array}{cc}\frac{7}{34} & \frac{1}{17} \\ \frac{-3}{34} & \frac{2}{17}\end{array}\right]$, then the value of x is

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If $f(x)=\left|\begin{array}{ccc}\sin x & \cos x & \tan x \\ x^3 & x^2 & x \\ 2 x & 1 & 1\end{array}\right|$, then $\lim _{x \rightarrow 0} \frac{f(x)}{x^2}$ is

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If $f(x)=\left\{\begin{array}{ll}\frac{1-\cos x}{x}, & x \neq 0 \\ k, & x=0\end{array}\right.$ is continuous at x=0, then the value of k is

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If $f(x)=\left\{\begin{array}{l}\frac{x^2-9}{x-3} \text { if } x \neq 3 \\ 2 x+k \end{array}\right.$, otherwise is continuous at x=3, then k is equal to

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