None, no single method can fully measure the kinds of variables important to OD because each has certain strengths and weaknesses.
Because it measures the averages of a collection of data
"Measures of central tendency are statistical measures." is an accurate statement.
It uses a different group of participants for each of the treatment conditions being compared.
The coefficient of determination, otherwise known as the r^2 value, measures the strength of the linear relationship between two quantitative variables. An r^2 value of 1 indicates a complete linear relationship while a value of 0 means there is no relationship.
SE is the standard error. it is the standard deviation divided by the square root of sample size. It basically measures how accurately a statistic describes the population.
Because it measures the averages of a collection of data
"Measures of central tendency are statistical measures." is an accurate statement.
It measures associations between variables.
correlation
An Astrolabe
line that measures the slope between dependent and independent variables
Validity is the extent to which a measurement tool actually measures what we wish to measure.
Dependent & independent
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The BodyBugg accurately measures calories through a variety of physiological sensors. These sensors take measurements of heat, acceleration, and skin qualities.
In an experiment the variables whose values are measured. A scientist measures how these variables respond to changes they make in an independent variable.
An Astrolabe. It measures latitude by thehorizon.