Lab 3: BioStatistics

Question 1

What are descriptive characteristics in Biostatistics?

Answer 1

1. mean
2. median
3. standard deviation

Question 2

What is MEAN?

Answer 2

the average

Question 3

What is the MEDIAN?

Answer 3

the middle

Question 4

Which descriptive characteristics will be used in the results section?

Answer 4

mean and standard deviation

Question 5

Which descriptive characteristics will be used in the graph?

Answer 5

mean and standard error

Question 6

What is the inferential statistic that was used in this lab?

Answer 6

The students T test

Question 7

What is the students T test?

Answer 7

IV has 2 categories and the DV is continuous

Question 8

What is a discrete variable?

Answer 8

variable that is categorical

Question 9

What is the continuous variable?

Answer 9

variable that range

Question 10

What is the continuous variable?

Answer 10

variable that range

Question 11

What does the variable H0 stand for?

Answer 11

the null hypothesis

Question 12

What variable goes on the x-axis?

Answer 12

the independent variable

Question 13

If your independent variable is nomial, what is the best way to present that data?

Answer 13

with a bar graph

Question 14

What is the variance?

Answer 14

squared deviations from the mean

Question 15

What is the standard deviation?

Answer 15

the measure of deviation in the same units as the mean

Question 16

if p>0.05 we ____________

Answer 16

support H0 and reject H1

Question 17

if p<0.05 we _____________

Answer 17

reject H0 and support H1

Question 18

There is no significant difference between the mass of shells from Beach A and Beach B is an example of what?

Answer 18

null hypothesis

Question 19

If there is a significant difference between shell mass due to predation, then we will see a difference between the masses from beach A and beach B?

Answer 19

hypothesis

Question 20

How do we write a results statement?

Answer 20

variable 1 (average+/- standard deviation) was significantly greater than variable 2 (averaeg+/-standard deviation) in the experiment (T value, Nvariable1, Nvariable2, p<0.05, p=x)

Question 21

when would you use a two-tailed T test? one tailed?

Answer 21

2: if you think you know the direction
1: if you do not know the direction

Question 22

what are the required variables of a graph?

Answer 22

title, x, y, DV, standard error, and means

Question 23

can you prove a hypothesis?

Answer 23

no