Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with probability-or-statistics
Search options not deleted
user 68574
Questions about systematic data collection and organization, or the application of probability theory to model the inherent patterns and properties of sampled data, underlying data distribution(s) or random processes.
3
votes
3
answers
236
views
How to use Mathematica to find the mode of a set of data? [closed]
Mode[{2, 3, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 10}]
Why can't the mode command be used to find the mode of a set of data?
- 1
0
votes
1
answer
88
views
How to solve a problem about data when a certain percentile number is known?
Given that the 75th percentile of the data set is 6, how can we find the value of parameter a?
data = {1, 1, a, 4, 5, 5, 6, 7}
Why didn't the following method yield the value of a?
Clear["`*"]
data = …
- 1
1
vote
0
answers
88
views
Is there a difference in the definition of the pth percentile in Mathematica? [closed]
The pth percentile of a set of n data can be calculated by the following steps:
Step 1: arrange the original data in ascending order.
Step 2: calculate i=n*p%.
Step 3: if i is not an integer and the n …
- 1
2
votes
3
answers
165
views
How to find the K value in the probability inequality of binomial distribution?
dist = BinomialDistribution[100, 1/3]
Solve[{PDF[dist, k] >= PDF[dist, k - 1],
PDF[dist, k] >= PDF[dist, k + 1]}, k] // FullSimplify
In this binomial distribution, when the value of K is, the pr …
- 1
0
votes
1
answer
88
views
How to Chi-square test in statistics? [duplicate]
Can we be 99% sure that there is a difference between the health habits of the group suffering from the disease and the group not suffering from the disease? The calculation formula and data are shown …
- 1
1
vote
2
answers
140
views
The problem of finding the maximum coefficient term in the binomial expansion, find the valu...
The problem is shown in the figure, and the result should be the range of K obtained at the end of the image
Reduce[{Binomial[n, k] a^(n - k) b^k >=
Binomial[n, k + 1] a^(n - k - 1) b^(k + 1),
…
- 1
0
votes
1
answer
242
views
How to Draw a Probability Tree Diagram to Calculate the Probability of Badminton Competition...
Question：
A, B, and C students will participate in a badminton competition, and the agreed format is as follows:
Those who have accumulated two losses are eliminated;
Draw lots before the competition …
- 1
-4
votes
2
answers
137
views
How can we solve this probability problem through code?
Person A and Person B each have four cards, with each card marked by a number. Person A's cards are marked with the numbers 1, 3, 5, 7, and Person B's cards are marked with the numbers 2, 4, 6, 8. The …
- 1
1
vote
2
answers
150
views
A probability problem involving no replacement
Question:
There are 6 identical balls, numbered 1, 2, 3, 4, 5, 6. Three balls are drawn successively without replacement. Let m be the average of the numbers on the first two balls drawn, and let n be …
- 1
1
vote
2
answers
85
views
Alternative Methods to Calculate Expected Value and Variance of Discrete Random Variables [closed]
discrete random variable:
Draw a list
Clear["`*"]
distTable = {{\[Xi], 0, 0.8, 1.6, 2.4, 3}, {P, 0.8, 0.1, 0.06, 0.03,
0.01}};
grid = Grid[distTable, Alignment -> Center, Dividers -> All]
C …
- 1
-4
votes
3
answers
87
views
Determining the Probability of f(x) > b for Given Intervals of a and b
Let the function $f(x) = ax + \frac{x}{x-4}$ for $x > 4$. If $a$ is chosen from the numbers 1, 2, 3, 4 and $b$ is chosen from the numbers 4, 8, 12, 16, 20, 24, then the probability that $f(x) > b$ hol …
- 1
-3
votes
1
answer
48
views
Probability Problem Involving Dice Rolls: Conditional Probabilities of Events A and B [duplicate]
Throw red and blue dice, event A is "the number of blue dice points is 4 or 6", event B is "the sum of the two dice points is greater than 8", then P(B|A)=_____, P(A|B)=_____.
My method is as follows: …
- 1
-2
votes
1
answer
61
views
Probability Theory and Statistics Multiple Choice Question: Independence of Events in Sequen...
There are six identical balls, labeled with the numbers 1, 2, 3, 4, 5, and 6.
They are randomly drawn twice with replacement, each time drawing one ball.
Event "A" is defined as "the number of the bal …
- 1
5
votes
3
answers
489
views
Probability of Forming an Equilateral Triangle from a Cube's Vertices
From the eight vertices of a cube, if three points are chosen at random to form a triangle, what's the probability that this triangle is an equilateral triangle?
Options:
A. 1/7
B. 1/14
C. 2/7
D. 4/35 …
- 1
6
votes
5
answers
1k
views
How to calculate the number of prime numbers in a group of numbers?
If two different numbers are randomly selected from seven integers from 2 to 8, what is the probability of the two numbers being mutually prime?
Take 2 different numbers randomly from 7 integers from …
- 1