TEST 1 Flashcards
How to run data?
- Research Question
- Choice of Test
- Run Test
- Results
- Conclusion
Types of data?
Ratio, interval, ordinal, nominal
Ratio
True end point (length, weight)
Interval
No true endpoint (24 hour time, temperature)
Ordinal
Categories with levels (education, grades)
Nominal
Categories (sex, colors)
P- value
Probability of getting specific value if null hypothesis is true
significance value
alpha 0.05
critical value
is the value needed to be <0.05
Type 1 error
Rejecting a true null hypothesis
Type 2 error
Failing to reject a false null hypothesis
Power
the chance of rejecting a null hypothesis, increase n, decrease variability
data
the raw numbers
statistics
the summarized numbers
types of statistics
descriptive- mean, median, mode
inferential- possible outcomes
continuous
histogram
discrete
bar graphs
biological stats
all of the organisms in a given area
population stats
all the same species
measures of central tendencies
mean, median, mode
measures of distribution
std deviation, std error, variation, quartiles, diversity
1-tailed
< or >
2-tailed
= or not =
Shannon Diversity Index
Measures the diversity of a community
random sample
unbiased, reliable, consistent