Scientific Method Terminology Flashcards
4 Research Method Steps
Summarize, Organize, Interpret, Analyze…the data
Quantitative Data
Actual numbers
Qualitative Data
Other data such as age, gender, ethnicity
Descriptive Data
Charts, graphs
Inferential Data
Prediction, generalization
Two types of Discrete Scales
Normal and Ordinal
Two Types of Continuous Scales
Interval and Ratio
2 scales
Dichotomy
3 Scales
Trichotomy
5 Types of Display Data
Pie, Bar, Frequency, Polygram, Histogram
Mean is the central tendency measuring the
Average
Mode is the central tendency measuring the
Most frequent
Median is the central tendency measuring the
Exact middle
Range is a variant measuring
high-low
Standard Deviation is the variant measuring
The difference in variation
Name the two types of curves
Normal and Bell
Skewed positive looks like
Data is sloping to the positive side
Skewed negative means the data is
Sloping to the negative side of the curve
Z score measures
The distance of a score away from the mean such as how many Standard Deviations the value is from the mean.
The only type of scientific method to determine causation is
Experiment
What kind of correlation is related to scattered data?
No correlation
If the coefficient rate is positive, it means….
it increases or decreases at the same rate
If the coefficient is negative, it means
One variable increases while the other decreases
Scatterplots are the
Visual representation of the data
The purpose of a Null Hypothesis is to…
Predict there will NOT be a significant relationship.
Inferential Errors occur when
Anything allow us or encourages us to link a small group to a larger group where a link should not exist.
P-values tell us
The Statistical Significance
A P-value can NEVER be
0
