Sumários
Sampling distributions of statistics in Bernoulli and Normal populations
19 Dezembro 2014, 15:30 • Graça Leão Fernandes
Resolution of the 6th theoretical question and mini test.
Resolution of exerceises from Exercises for chapter six- nºs: 1, 2, 6, 8, 13, 14, 19, 22, 31, 36
Sampling distributions of some statistics in Normal population (continued)
16 Dezembro 2014, 13:30 • Graça Leão Fernandes
Normal population (continued):
- Sampling distributiom of the diference of sample means from two normal populations when the population variances are unknown and the assumption of equality is dropped - Welsh aproximation;
- Sampling distributiom of the ratio of corrected sample variances;
- The F - distribution - getting the probabilities using the calculator and the table.
Sampling distribution of some statistics in Bernoulli and Normal populations.
15 Dezembro 2014, 13:30 • Graça Leão Fernandes
Bernoulli populations:
- Sampling distribution of the sample proportion;
- Sampling distribution of the difference between sample proportions in two independent Bernoulli Populations.
Normal populations:
- Sampling distribution of the sample meanwhen the population variance is known ;
- Sampling distribution of the sample mean when the population variance is unknown- the racio of Student;
- De t-Student distribution, mean, variance and tables;
- Sampling distribution of the sample variance and the corrected sample variance;
- Sampling distribution of the difference between sample means from two independent normal populations when the populations variance is known;
- Sampling distribution of the difference between sample means from two independent normal populations when the populations variance is unknown - rácio the Student;
Sample mean and variance. Sampling distribution in Bernoulli populations.
12 Dezembro 2014, 15:30 • Graça Leão Fernandes
Sample mean and variance:
- Expected value and variance of the sample mean and sample variance;
- Assymptotic distribution of the sample mean.
Sampling distribution in Bernoulli populations:
- Sampling distribution of the sample proportion;
- Sampling distribution of the difference between sample proportions.
Resolution of the 5th theoretical question and mini test.
Statistic Inference.
9 Dezembro 2014, 13:30 • Graça Leão Fernandes
Statistic Inference:
- Random sample, model specification;
- Sample space and distribution of the sample space;
- Statistics, sampling distribution of a statistic;
- Order statistics: Distribution of the Maximum and the Minimum of a sample.
- Mean and the variance of the sample mean;
- Examples