Kalkulator Interval Kapercayan

Etung interval kapercayan kanggo data sampel kanthi tliti lan gampang.

Kalkulator Interval Kapercayan

Pilih jinis parameter

Sample Mean (x̄)

Sample Size (n)

Standard Deviation (σ)(Population or Sample)

Confidence Level (%)

Penyimpangan Standar Populasi Dikenal?

Yes (Use Z-distribution) No (Use t-distribution)

Babagan Alat Iki

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.

Ketik statistik sampel lan pilih tingkat kapercayan sing dikarepake kanggo ngetung interval.

Apa Interval Kapercayan?

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.

Contone, interval kapercayan 95% tegese yen kita njupuk 100 conto sing beda lan ngitung interval kapercayan 95% kanggo saben sampel, kira-kira 95 saka 100 interval kapercayan bakal ngemot parameter populasi sing bener.

Formula Digunakake

Interval kapercayan kanggo rata-rata:

CI = x̄ ± (Z or t) * (σ/√n)

Yen x iku rata-rata sampel, Z utawa t minangka nilai kritis, σ minangka standar deviasi, lan n minangka ukuran sampel.

Interval Kapercayan kanggo Proporsi:

CI = p̂ ± Z * √(p̂(1-p̂)/n)

Yen p̂ minangka proporsi sampel, Z minangka nilai kritis, lan n minangka ukuran sampel.

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