All Questions
Tagged with normal-approximation normal-distribution
6 questions
4
votes
1
answer
392
views
Convergence in distribution for difference in sample means?
Suppose
$X_i, i=1,\ldots, n$ are $i.i.d.$ random variables with mean $\mu_X$ and variance $\sigma^2_X$
$Y_j, j=1,\ldots, m$ are $i.i.d.$ random variables with mean $\mu_Y$ and variance $\sigma^2_Y$
$\...
- 43
2
votes
1
answer
1k
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Can Student's t-distribution be used in Normal Approximation to Binomial?
The question nearly covers it all. I clearly have a binomial distribution, however the variance and standarddeviations are unknown, the population is also just ...
- 23
4
votes
1
answer
2k
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What is the difference between normal approximation and poisson approximation of binomial distribution?
what is the difference between Poisson distribution as an approximation of Binomial distribution and Normal (Gaussian) distribution as an approximation of Binomial distribution? Both are ...
- 41
0
votes
1
answer
40
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How normal is the following distribution of data? [closed]
I'm using the following dataset with 2 columns (features) and 1 label to train a Gaussian Naive Bayes classifier. How would you determine (using a stastiscal normality test) whether the data is ...
20
votes
4
answers
5k
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Why does increasing the sample size of coin flips not improve the normal curve approximation?
I'm reading the Statistics (Freeman, Pisani, Purves) book and I'm trying to reproduce an example where a coin is tossed say 50 times, the number of heads counted and this is repeated say 1,000 times.
...
- 629
0
votes
2
answers
157
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A box contains 48 tickets [1] and 52 [0]. If you draw 10 times at random and with replacement, what is the probability of getting a sum of 3 or less?
I came across a question like this and I try it to solve it by 2 different methods. However, these 2 methods don't yield the same answer. So, I'd like to ask you what am I missing. I'm clearly doing ...
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