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Parameter|Statistics|Parametric Space



Parameter:

Q. What is Parameter?

Ans: In Statistical Inference parameter belongs to the population for which estimation is required. In general for a huge population we need to construct a statistics which can be use as a estimate of the population parameter.

 \small E(statistics)= Parameter 

Example: For a normal distribution of \small X\sim N(\mu,\sigma), the parameters are \small \mu,\sigma

Statistics:

Q.What is Statistics?

Ans: In statistical inference statistics regarded as an estimate of the parameter from the population. Statistics can be shown as a function of sample observation. 

Example: For a normal distribution \small X\sim N(\mu,\sigma), \small \bar{x}(sample mean) is the estimate of population mean \small \mu.

Parametric Space:

Q. What is parametric space in statistics?

Ans: All possible values of parameters or the range of the parameter is parametric space.It is denoted by \small \Theta.

Example:For a normal distribution \small X\sim N(\mu,\sigma), the parametric space is \small \Theta=\small {(\mu,\sigma):-\infty <\mu<\infty,0<\sigma<\infty}.


Tags: statistical inference, parametric space notation, parametric space symbol, what is parametric space in statitics, parameter space normal distribution

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