Pdbio 120 - Lecture 2 - Experimental Design

Front 1

_______ predicts that <b>there will be no effect of treatment</b>

Back 1

<b>Null</b> hypothesis predicts that _______

Front 2

_______ hypothesis is the opposite of the <b>null</b> hypothesis

Back 2

<b>Alternate</b> hypothesis is the opposite of the _______ hypothesis

Front 3

_______ variable is what the researcher <b>measures</b>. Traditionally this variable is displayed along the y-axis in a graph

Back 3

<b>Dependent</b> variable is what the researcher _______. Traditionally this variable is displayed along the y-axis in a graph

Front 4

_______ variable is what the researcher <b>varies or controls</b>. Traditionally this variable is displayed along the x-axis in a graph

Back 4

<b>Independent</b> variable is what the researcher _______. Traditionally this variable is displayed along the x-axis in a graph

Front 5

_______ is <b>the physical entity represented by the variables</b> (e.g. time)

Back 5

<b>Parameter</b> is _______ [definition]

Front 6

_______ is <b>the unit of the parameter</b> (e.g. seconds)

Back 6

<b>Dimension</b> is _______ [definition]

Front 7

_______ are special samples intended for <b>comparison</b>

Back 7

<b>Controls</b> are special samples intended for _______

Front 8

_______ controls are absence of treatment, gives result expected if null hypothesis is true

Back 8

Negative controls are are absence of treatment, gives result expected if _______ hypothesis is true

Front 9

_______ controls are used as a treatment that is known to give a response, establishes that the experimental protocol is capable of measuring a response, gives result expected if <b>alternate</b> hypothesis is true

Back 9

<b>Positive</b> controls are used as a treatment that is known to give a response, establishes that the experimental protocol is capable of measuring a response, gives result expected if _______ hypothesis is true

Front 10

<b>Random</b> selection of subjects reduces _______

Back 10

_______ selection of subjects reduces <b>bias</b>

Front 11

The _______ the sample size, the <b>more accurate</b> the data

Back 11

The <b>larger</b> the sample size, the _______ the data