Chapter 2 Flashcards
Null hypothesis definition
no significant difference resulting from the application of the variable in the experiment.
Independent variable
the manipulated variable defined by the researcher.
Dependent variable
the measured variables of an experiment.
Extraneous variable
the variables not part of the experiment (and not useful) but may impact results
The purpose of this experiment is to determine the effect on volume, texture, flavor, tenderness, and moisture when fructose is substituted for sucrose at two levels in cake.
Which is the dependent variables?
Volume, texture, flavor, etc.
The purpose of this experiment is to determine the effect on volume, texture, flavor, tenderness, and moisture when fructose is substituted for sucrose at two levels in cake.
Which is the independent variable?
Sugar
The purpose of this experiment is to determine the effect on volume, texture, flavor, tenderness, and moisture when fructose is substituted for sucrose at two levels in cake.
Which is the extraneous variables
Different brands, cookware, etc
Descriptive statistics
describes results in terms of calculations such as frequency, percentages, etc.
Inferential statistics
applied to make predictions about populations that meet the same criteria as those in the study.
What are the 7 components of a research report, journal article
- Introduction (Review of literature)
- Method
- Results
- Discussion
- Conclusions
- Bibliography
- Appendices (optional)
Sensory (subjective) evaluation
●Based on sensory characteristics and personal preferences as perceived by the five senses.
Objective evaluation
●Use laboratory instruments
●Quantify physical and chemical differences in foods
Hypothesis definition
▫Assumption to test consequences of applying a variable in research
