Monday, May 18, 2009

Alternative Hypothesis (H1)

In hypothesis testing, . If the data are sufficiently strong to reject the null hypothesis, then the null hypothesis is rejected in favor of an alternative hypothesis. For instance, if the null hypothesis were that µ1= µ2 then the alternative hypothesis (for a two-tailed test) would be µ1 ≠ µ2.
So, we accept the alternative hypothesis, if the Null hypothesis is rejected.

The Null Hypothesis (H0)

The null hypothesis is an hypothesis about a population parameter. The purpose of hypothesis testing is to test the viability of the null hypothesis in the light of experimental data. Depending on the data, the null hypothesis either will or will not be rejected as a viable possibility.

The null hypothesis is often the reverse of what the experimenter actually believes; it is put forward to allow the data to contradict it.

Friday, May 15, 2009

Aim of Research in Education

The aim of research in education—and public interest research in particular—is to offer a response to challenging problems and advance a sound and coherent evidentiary base on matters of human development broadly defined. Public interest research requires the researcher to negotiate tensions across the humanistic, scientific, and engineering traditions that influence scholarship in education.