Dark Mode

Recent questions tagged statistics

0 votes

0 answers

1

Best Open Video Playlist for Elementary Statistics Topic | Quantitative Aptitude
Please list out the best free available video playlist for Elementary Statistics from Quantitative Aptitude as an answer here (only one playlist per answer). We'll then select the best playlist and add to GO classroom ... ones are more likely to be selected as best. For the full list of selected videos please see here

makhdoom ghaya asked in Study Resources Aug 28, 2022

by makhdoom ghaya

27 views

1 vote

0 answers

2

ISI2020-PCB-10
Let $X_i\sim (i.i.d) Bernoulli(\frac{\lambda}{n}),n\geq\lambda\geq 0$. $Y_i\sim (i.i.d) Poisson(\frac{\lambda}{n})$, $\{X_i\}$ and $\{Y_i\}$ are independent. Let $\sum_{i=1}^{n^2} X_i=T_n$ and $\sum_{i=1}^{n^2} Y_i=S_n$ (say). Find the limiting distribution of $\frac{T_n}{S_n}$ as $n\to \infty$.

sd4867 asked in Probability May 6, 2022

by sd4867

120 views

1 vote

1 answer

3

NIELIT Scientific Assistant A 2020 November: 61
Find the mode of the following data: ... $20.22$ $19.47$ $21.12$ $20.14$

gatecse asked in Quantitative Aptitude Dec 9, 2020

193 views

2 votes

1 answer

4

NIELIT 2016 MAR Scientist B - Section B: 17
Following marks are obtained by the students in a test: $81,72,90,90,86,85,92,70,71,83,89,95,85,79,62$. Range of the marks is $9$ $17$ $27$ $33$

Lakshman Patel RJIT asked in Probability Mar 31, 2020

by Lakshman Patel RJIT

331 views

1 vote

1 answer

5

GATE Overflow | General Aptitude | Test 2 | Question: 2
Naveen wrote down all the different three-digit numbers that can be written using each of the numeral 1, 2 and 3 exactly once. What is the median of the numbers Naveen wrote down?

Arjun asked in Quantitative Aptitude Jun 9, 2019

by Arjun

232 views

4 votes

2 answers

6

GATE Overflow | Mock GATE | Test 1 | Question: 44
For two data sets, each of size $5$, the variances are given to be $4$ and $5$ and the corresponding means are given to be $2$ and $4$ respectively. The variance of the combined data is? $11/2$ $6$ $13/2$ $5/2$

Ruturaj Mohanty asked in Probability Dec 27, 2018

by Ruturaj Mohanty

758 views

2 votes

3 answers

7

GATE Overflow | Mock GATE | Test 1 | Question: 53
A class of first year B.tech students is composed of four batches A, B, C and D, each consisting of $30$ students. It is found that the sessional marks of students in Engineering Drawing in batch C have a mean of $6.6$ and standard deviation of $2.3$. ... this, the marks of a student in batch C are changed from $8.5$ to $8.75$ $7.45$ $9.27$ $8.97$

Ruturaj Mohanty asked in Probability Dec 27, 2018

by Ruturaj Mohanty

893 views

4 votes

1 answer

8

GATE2017 CE-1: GA-5
The following sequence of numbers is arranged in increasing order: $1,x,x,x,y,y,9,16,18$. Given that the mean and median are equal, and are also equal to twice the mode, the value of $y$ is $5$ $6$ $7$ $8$

Milicevic3306 asked in Quantitative Aptitude Mar 26, 2018

by Milicevic3306

1.8k views

1 vote

1 answer

9

Previous Gate
The second moment of a Poisson-distributed random variable is 2. The mean of the variable is .... My question on solving we get 2 values of lamda(ie mean) .One is -2 and the other is 1 .So which one to choose?

Kalpataru Bose asked in Mathematical Logic Nov 23, 2017

by Kalpataru Bose

4.1k views

1 vote

0 answers

10

Finding minima of function.
For what value of 'k' (in terms of $X_{i}$'s) following functions will attain their minimum value $\rightarrow$ $F_{1}(k)$ = $\sum_{i=0}^{n} \left | X_{i} - k \right |$ $F_{2}(k)$ = $\sum_{i=0}^{n}\left ( X_{i} - k \right )^{2}$ If possible, please provide some valid proof for supporting your answer ?

Chhotu asked in Probability Nov 11, 2017

by Chhotu

209 views

0 votes

1 answer

11

Doubt
the harmonic mean of two positive integers p and q is 3, given that [ (6p+1)/(7q-4) ] <(p/q), what could be the value of q? a)q<=4 b)q>9 c)q<8 d)q>=13

Angkit asked in Quantitative Aptitude May 15, 2017

by Angkit

414 views

4 votes

1 answer

12

GATE2017 ME-1: GA-4
In a company with $100$ employees, $45$ earn $Rs. 20,000$ per month, $25$ earn $Rs. 30000$, $20$ earn $Rs. 40000$, $8$ earn $Rs. 60000$, and $2$ earn $Rs. 150,000$. The median of the salaries is $Rs. 20,000$ $Rs. 30,000$ $Rs. 32,300$ $Rs. 40,000$

Arjun asked in Quantitative Aptitude Feb 27, 2017

by Arjun

879 views

8 votes

2 answers

13

GATE2016 ME-2: GA-6
Students taking an exam are divided into two groups, P and Q such that each group has the same number of students. The performance of each of the students in a test was evaluated out of $200$ marks. It was observed that the mean of group P was $105$, ... students of group Q scored marks in a narrower range than students in group P. The median of the marks of group P is $100$.

makhdoom ghaya asked in Quantitative Aptitude Jan 20, 2017

by makhdoom ghaya

2.8k views

2 votes

3 answers

14

Test by Bikram | Mock GATE | Test 1 | Question: 24
The internet host is roughly doubling in size every $18$ $months$. Although no one really knows for sure, one estimate put the number of hosts on it at $7$ million in January $1996$. Using these data the expected number of internet hosts in January $2008$ is _____ billion.

Bikram asked in Probability Jan 16, 2017

by Bikram

590 views

2 votes

1 answer

15

Standard Deviation

KISHALAY DAS asked in Probability Oct 22, 2016

by KISHALAY DAS

892 views

4 votes

3 answers

16

ISRO2014-74
What is the median of data if its mode is $15$ and the mean is $30?$ $30$ $25$ $22.5$ $27.5$

Aryan asked in Probability Jun 27, 2016

by Aryan

3.9k views

4 votes

2 answers

17

ISRO2009-65
If the mean of a normal frequency distribution of $1000$ items is $25$ and its standard deviation is $2.5,$ then its maximum ordinate is $\frac{1000}{\sqrt{2 \pi} } e^{-25}$ $\frac{1000}{\sqrt{2 \pi} }$ $\frac{1000}{\sqrt{2 \pi} } e^{-2.5}$ $\frac{400}{\sqrt{2 \pi} }$

go_editor asked in Probability Jun 15, 2016

2.9k views

11 votes

6 answers

18

GATE2014 EC-1: GA-4
The statistics of runs scored in a series by four batsmen are provided in the following table. Who is the most consistent batsman of these four? ... $K$ $L$ $M$ $N$

makhdoom ghaya asked in Quantitative Aptitude Mar 18, 2016

by makhdoom ghaya

4.6k views

4 votes

2 answers

19

GATE2012 AE: GA-5
The arithmetic mean of five different natural numbers is $12$. The largest possible value among the numbers is $12$ $40$ $50$ $60$

Akash Kanase asked in Quantitative Aptitude Feb 16, 2016

by Akash Kanase

2.1k views

1 vote

1 answer

20

Subject Topic- Probability
what is positively skewed ,symmetric and negatively skewed distribution?

Amey asked in Probability Dec 25, 2015

by Amey

815 views

6 votes

2 answers

21

TIFR CSE 2015 | Part A | Question: 15
Let $A$ and $B$ be non-empty disjoint sets of real numbers. Suppose that the average of the numbers in the first set is $\mu_{A}$ and the average of the numbers in the second set is $\mu_{B}$; let the corresponding variances be $v_{A}$ and $v_{B}$ respectively. If the average of the ... $p.v_{A}+ (1 - p). v_{B} + (\mu_{A}- \mu_{B})^{2}$

makhdoom ghaya asked in Quantitative Aptitude Dec 5, 2015

by makhdoom ghaya

774 views

4 votes

2 answers

22

statistics
Q) Let $x$ be normal variable with mean $8$ and standard deviation $4$ then $p(X\leq5)$ is A). Greater than zero but less than $0.5$ B). Greater than $0.75$ C). Greater than $0.5$ but less than $1$ D). Equal to $0.5$

richa116 asked in Probability Dec 3, 2015

844 views

17 votes

2 answers

23

GATE CSE 2012 | Question: 64
Which of the following assertions are CORRECT? P: Adding $7$ to each entry in a list adds $7$ to the mean of the list Q: Adding $7$ to each entry in a list adds $7$ to the standard deviation of the list R: Doubling each entry in a list doubles the mean of the ... entry in a list leaves the standard deviation of the list unchanged $P$, $Q$ $Q$, $R$ $P$, $R$ $R$, $S$

gatecse asked in Quantitative Aptitude Sep 29, 2014

4.7k views

To see more, click for the full list of questions or popular tags.

Recent questions tagged statistics