Áireamhán Eatraimh Muiníne

digiteachRíomh eatraimh mhuiníne do do shonraí samplacha le cruinneas agus gan stró.

Áireamhán Eatramh

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Our confidence interval calculator helps you determine the range within which a population parameter (such as the mean or proportion) is likely to fall. Confidence intervals are a key concept in statistics, providing a measure of the uncertainty associated with your sample data.

Cuir isteach do staitisticí samplacha agus roghnaigh an leibhéal muiníne atá ag teastáil chun an t-eatramh a ríomh.

Cad is Eatramh Muiníne ann?

A confidence interval is a range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter. The confidence level (e.g., 95%) represents the proportion of intervals that would contain the true parameter if you were to take many samples.

Mar shampla, ciallaíonn eatramh muiníne 95% dá dtógfaimis 100 sampla éagsúil agus eatramh muiníne 95% a ríomh do gach sampla, ansin beidh an fíor-pharaiméadar daonra i thart ar 95 de na 100 eatramh muiníne.

Foirmlí a Úsáidtear

Eatramh Muiníne le haghaidh Meán:

CI = x̄ ± (Z or t) * (σ/√n)

Nuair is é x̄ an meán samplach, is é Z nó t an luach criticiúil, is é σ an diall caighdeánach, agus is é n an méid samplach.

Eatramh Muiníne le haghaidh Cionir:

CI = p̂ ± Z * √(p̂(1-p̂)/n)

Nuair is é p ̂ an cion samplach, is é Z an luach criticiúil, agus is é n an méid samplach.

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