Biology Unit 6 Flashcards
(19 cards)
Null hypothesis:
There is no significant correlation/ difference
Between the x and y
Prepare a suitable table for raw data, with mean/median value:
X - independent
Y - dependent
Graph use st. line correlation
Graph use bar graph for comparison
Prepare a graph:
Data correlated > St. line graph.
Data Compared > Bar graph.
Data random > scatter graph
table,
graph with variability
Degree of Freedom:
N-1
Explain why it is difficult for valid conclusion:
Other factors may not been taken to consideration,
Such as (age, sex, temperature, pH)
Sample sample size.
Error bar overlaps.
Control and Measure pH:
Buffer solution, pH probe
Control and Measure Temp:
Thermostatically controlled incubator, water bath, Thermometer
Control and Measure Humidity:
Air condition/ closed chamber, Hygrometer.
Control and Measure Light:
Use the same bulb from the same distance, light probe.
Control and Measure type of species:
Collect species from the same source.
Control wind:
Use fan, hair dryer,
Control and Measure gas:
Gas syringe.
Issue definition:
To identify the problem.
There is no significant safety issue for this experiment
Safety issues:
Identify the problem.
Risk of damage, injury, infection.
Risk of allergy, burning, irritation,
Ethical issues:
Need to take consent from people involved.
Avoid participants with health conditions, heart disease.
Preliminary work:
Practice the proposed method to see if it will work or not.
Suitable time scale, control
Suitable measurement x, and y.
Limitations:
Difficult to control all variables affecting dependent variables.
Like: age sex , food.
5 or 10 marker:
IV 1
DV 1
Take a different range of IV in minimum 5 values, including controlled variables. 1
Procedure, measure DV, Calculation and procedure. 4
CVx2 method 2
Repeat procedure calculate mean 1
