Homework 1: Scientific Method, Research Articles, & Data Analysis
True or False. We use sample statistics to estimate population parameters.
True
What is the relationship between Standard Error, Standard Deviation, and Variance?
Var>SD>SE
A mutation is:
a change in the DNA sequence
In the language of experiments, what is a treatment?
a condition or intervention which is applied to individuals (independent variable)
The EXCEL commands we will use are:
all of the above
Which of the following are examples of descriptive statistics?
all of the above
The control in an experiment:
allows for comparisons to the experimental group
A theory is:
an explanation of an idea that is broad in scope and supported by a large body of evidence
In a world, evolution means:
change
Which term refers to judging information before accepting it as fact?
critical thinking
The probability that 2 groups are the same is called:
p-value
What is the standard p-value for 2 groups to be considered significantly different?
p<0.05
DNA codes for the production of:
proteins
In the language of experiments, what is a dependent variable?
something that is measured from the subjects
Which concept represents the highest degree of certainty?
theory
How should you cite references in the text of Dr. McCue's journal club?
(Reference Number)
Which website does Dr. McCue recommend for finding a journal club article?
Academic Research Complete/EBSCO
The EXCEL tab for making a graph:
INSERT, COLUMN
What is the key difference between an observational study and an experiment?
In observation studies, subjects do not receive any intervention designed to influence their responses and there are no controls.
Why do we use inferential statistics?
Inferential statistics are used to help us to generalize from the sample to the whole population.
As a general rule, the ________________ is the best measure of central tendency because it is more precise.
Mean
Which of the following is NOT a measure of variability?
Median
What does it mean for a result to be statistically significant?
The result or relationship is caused by something other than mere random chance.
Which of the following statements is true?
- the larger the sample size, the close the sample mean will be to the population
What is the range of the following data set: 14, 23, 9, 12, 21, 18, 8
15
If p<0.01, what is the percent chance that 2 groups are really the same?
<1%
Which sections will be present in a Primary Research Article?
All of these
How are experimental groups that are found to be significantly different from one another indicated on a graph?
Asterisks or Letters, and description in caption
The EXCEL tabs for editing axis titles, legends, and error bars is :
CHART TOOLS, LAYOUT
A graph that uses vertical bars to represent data is called a _____________.
Column Graph
How is variation within an experimental group typically shown on a graph?
Error Bars
Which of the following is NOT a common measure of central tendency?
Range
Science is based on:
evidence
4 of the following are key characteristics for the survival of a species. Which one is the exception?
inability to change
