Simple Random Sampling and Sampling Distribution- ### Simple Random Sampling
Simple random sampling is a type of sampling method, in which each eleme...

## COURSE

## Sampling and Estimation

In the real world, it is often not possible to collect data about an entire population to conduct a statistical analysis. For example, to make conclusions about the saving habits of families in a city, it would be impractical to collect and analyse savings data about each and every family in the city. Instead, a small group of families, called a sample, can be used to represent the entire population. We can then use this sample to perform our statistical analysis and estimate parameters for the population. These parameters will however only be estimates of the actual parameters of the population.

Learn about how to obtain sample data and use the sample to estimate parameters of the population.

#### Course Downloads

Study Notes for CFA Level I - Sampling and Estimation

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- Sampling error is the difference between the sample statistics (such as sample mean) and the corresp...
- Stratified random sampling is a sampling method that goes one step further than [simple random sampl...
- In investment analysis, we observe two types of data, namely, time-series data and cross-sectional d...
- The [Central Limit Theorem](https://financetrain.com/central-limit-theorem/ "Central Limit Theorem")...
- The standard error of the sample [mean](https://financetrain.com/calculating-arithmetic-mean/ "Calcu...
- In statistics, statistical inference refers to drawing conclusion based on the data. Statistical inf...
- A point estimate is a single statistic value that is the “best guess” for the parameter value (such ...
- Along with point estimate we may also want to find a range of values within which our [population pa...
- We have the following assumptions: - Population variance σ2 is known - Population is normally d...
- If the population variance is not known, then we do the following change to the above confidence int...
- When the distribution is normal, we use the z-statistic when the population variance is known and we...
- Student’s t distribution, or simply called t-distribution, is a form of continuous probability distr...
- [Student’s t distribution](https://financetrain.com/students-t-distribution/ "Student’s t Distributi...
- As we have seen in this chapter, all our estimates are based on the sample selected from the populat...

## LESSONS

Sampling Error

Stratified Random Sampling

Time Series and Cross Sectional Data

Central Limit Theorem

Standard Error of the Sample Mean

Parameter Estimation

Point Estimates

Confidence Interval Estimates

Confidence Interval for a Population mean, with a ...

Confidence Interval for a Population mean, with an...

Confidence Interval for a Population Mean, when th...

Student’s t Distribution

How to Read Student’s t Table

Biases in Sampling