Probability / Statistics

W
Understanding random numbers
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13
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3K
woodturner550
W
C
Probability of any random n points on a line being within a minimum distance
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5
Views
3K
porgyturtle
P
B
Qualitative Statistics with two or more variables
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1
Views
775
burt
B
P
Mediation analysis
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0
Views
717
psychstud
P
M
(Roots of Quadratic Equations) A, BB, and CC are selected at random and independently from the interval (0,1)(0,1).
2
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24
Views
5K
mario99
M
M
Maximum Likelihood seems to be inexistant: f(x) = sqrt[theta/2*pi] e^{(-x^2)/theta} 1(x)_R, theta > 0
Replies
1
Views
921
BeachBanana
BeachBanana
A
Studies vs. Experiments: "Two studies are run to determine the effect of low levels of wine consumption on cholesterol level...."
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2
Views
1K
Audentes
A
M
Joint Probability Density Function: f(x,y,z,t) = 1/(xyz) for 0<t<=z<=y<=x<=1, 0 elsewhere
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17
Views
4K
mario99
M
G
In need of homework help: Suppose X, Y are jointly continuous random variables with f_(Y|X)(y,x) = x exp(-yx)...
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2
Views
851
blamocur
blamocur
M
mean and variance: Let X be a discrete random variable such that X = 0 with probability 0.5 and X = 1 with probability 0.5.
Replies
7
Views
1K
BeachBanana
BeachBanana
M
A confusing Q for beginners: Consider 6, 2, 4, 9, 1, 3, 5 as a population. Find the interquartile range.
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6
Views
3K
Dr.Peterson
Dr.Peterson
C
Fisher's exact test (In our study, we collected data through binary response questions (yes or no).)
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0
Views
848
Ceci
C
A
Normal Distribution Question: If 2 men, 1 woman are randomly selected, what is prob. maximum is exceeded?
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7
Views
2K
blamocur
blamocur
L
Quantitative Reasoning: all instructors in 3 office buildings are interviewed to determine their level of research interest.
Replies
3
Views
1K
blamocur
blamocur
J
probability struggles: "In a school of 340 students, 40% study Japanese, 75% study French and 20% study both,"
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7
Views
1K
khansaheb
K
P
Permutations question: book's soln to "How many diff. arrangements can be made if V is 2nd, Z never last?"
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5
Views
1K
pazzy78
P
S
How do I calculate how much the data deviates from one group to another in a table of percentages and standard errors?
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1
Views
893
khansaheb
K
D
Simple multi-part probability event: For a fly ball, assuming they were the only fielder, the left fielder havs a 50% chance of making the catch....
Replies
6
Views
2K
khansaheb
K
A
CFA: chi-square value is 0 but with degrees of freedom
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1
Views
1K
axenox
A
A
sample size in parallel multiple mediation analysis with 2 mediators and 3 covariate/control variables
Replies
0
Views
793
AmyStill
A
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