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Recent questions tagged statistics
0
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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
missing-videos
go-classroom
free-videos
video-links
statistics
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
probability
statistics
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
by
gatecse
193
views
nielit-sta-2020
quantitative-aptitude
statistics
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
nielit2016mar-scientistb
statistics
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
go-general-aptitude-2
numerical-answers
quantitative-aptitude
statistics
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
go-mockgate-1
quantitative-aptitude
statistics
variance
probability
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
go-mockgate-1
engineering-mathematics
probability
statistics
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
gate2017-ce-1
general-aptitude
quantitative-aptitude
statistics
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
mathematics
gate-2015
engineering-mathematics
statistics
probability
poisson-distribution
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
engineering-mathematics
statistics
maxima-minima
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
statistics
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
gate2017-me-1
general-aptitude
quantitative-aptitude
statistics
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
gate2016-me-2
probability
statistics
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
tbb-mockgate-1
numerical-answers
statistics
quantitative-aptitude
growth-rate
2
votes
1
answer
15
Standard Deviation
KISHALAY DAS
asked
in
Probability
Oct 22, 2016
by
KISHALAY DAS
892
views
statistics
standard-deviation
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
probability
statistics
mean-mode-median
isro2014
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
by
go_editor
2.9k
views
isro2009
statistics
normal-distribution
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
gate2014-ec-1
statistics
quantitative-aptitude
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
gate2012-ae
statistics
quantitative-aptitude
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
statistics
probability
engineering-mathematics
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
tifr2015
statistics
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
by
richa116
844
views
statistics
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
by
gatecse
4.7k
views
gatecse-2012
quantitative-aptitude
statistics
normal
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