Homework 1: Scientific Method, Research Articles, & Data Analysis

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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


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