Προγραμματιστής:
Τιμή: $0.99
Κατατάξεις: 0 
Κριτικές: 0 Γράψτε μια κριτική
Λίστες: 0 + 0
Βαθμοί: 0 + 0 ¡
Βαθμοί +1

Περιγραφή

Correlation Confidence Intvls
Correlation is a quantitative tool commonly used by researchers to separate data sets into independent subgroups. Hypothesis testing determines whether or not the subgroups are numerically distinct. The degree to which the researcher can say the subgroups are distinct depends upon the overlap between the subgroups measured by the confidence interval estimates. The confidence interval estimates reflect the reality that there are errors in all quantitative estimates.

If correlation estimates were normally distributed, estimates of confidence intervals would be straightforward. However, correlation estimates are bound within the range of –1.0 to +1.0. The common technique devised by R.A. Fisher involves a nonlinear transformation of correlation functions into random variables that are approximately normal. The technique is known as Fisher's z-transformation and is formally expressed as ρ = tanh(z), where tanh( ) is the hyperbolic tangent function.

More simply, the transformed standard error, z, is defined as z = (1/2) ln[ (1 + ρ) / (1 – ρ) ]. The variance is a function of the number of paired samples in the sets being correlated and is defined as var(z) = 1 / (n – 8/3).

Thus, for example, the 95% confidence interval around a correlation estimate would be from (z – 1.96 σ) to (z + 1.96 σ) where σ = sqrt( 1/ (n – 8/3) ).

The iPad version allows you to add, retrieve, reorder, or delete data sets. Also, you may email, send via texting, and print data and results.
Περισσότερα ↓

Στιγμιότυπα οθόνης

Correlation Confidence Intvls (iOS) Με: MSYapps

Τι νέο υπάρχει

  • Εκδοχή: 8.1
  • Ενημερώθηκε:
  • - Corrected colors in Dark mode.
    - Fixed problem that prevented sharing of PDF output.
    - Various GUI tweaks.

Τιμή

  • Σήμερα: $0.99
  • Ελάχιστο: $0.99
  • Μέγιστο: $1.99
 
Παρακολούθηση τιμών

Προγραμματιστής

Βαθμοί

Δεν βρέθηκε ☹️

Κατατάξεις

Δεν βρέθηκε ☹️

Λίστες

Δεν βρέθηκε ☹️

Κριτικές

Γίνε ο πρώτος που θα αξιολογήσει 🌟

Πρόσθετες πληροφορίες

Correlation Confidence IntvlsCorrelation Confidence Intvls URL μικρού μήκους: Αντιγράφηκε!
  • Κοινή χρήση 👍
  • App Store

Μπορεί επίσης να σας αρέσει

Μπορεί επίσης να σας αρέσει

Τελεστές αναζήτησης που μπορείτε να χρησιμοποιήσετε με το AppAgg
Προσθήκη στο AppAgg
AppAgg
Ξεκινήστε - είναι δωρεάν.
Εγγραφή
Είσοδος