Question 1

Define inferential statistics.

Accepted Answer

The answer of Define inferential statistics....

Question 2

A developmental psychologist conducts an experiment to determine if exposure to an enriched environment shortly after birth will cause increased brain development. Twenty, two month old rats are randomly selected from a pool of one thousand, two month old, rat pups. Ten of the twenty pups are exposed to an enriched environment for three weeks and the other ten to the usual environment for the same period of time. At a suitable time after the exposure, the psychologist measures the number of neurons per cm³ in the brain of each rat. A comparison is then made of the mean number of neurons per cm³ for each group. Identify the following:

Accepted Answer

The answer of A developmental psychologist conducts an experiment to...

Question 3

Define independent variable.

Accepted Answer

The answer of Define independent variable....

Question 4

What is the major difference between descriptive and inferential statistics? Illustrate, using an example.

Accepted Answer

The answer of What is the major difference between descriptive...

Question 5

Define descriptive statistics.

Accepted Answer

The answer of Define descriptive statistics....

Question 6

A scientist takes a random sample of 50 citizens in a city and asks them their age. The scientist then calculates the average age and uses that as an estimate of the average age of all the citizens in the city. What is this process called?

Accepted Answer

The answer of A scientist takes a random sample of...

Question 7

Define statistic.

Accepted Answer

The answer of Define statistic....

Question 8

A scientist asserts that properly collected data are essential to scientific method. Is she correct? Explain.

Accepted Answer

The answer of A scientist asserts that properly collected data...

Question 9

Another scientist is interested in parameter estimation. When asked to estimate the average income in a city he went to the Millionaire's Club and asked each person their average income. What was wrong with that process?

Accepted Answer

The answer of Another scientist is interested in parameter estimation....

Question 10

How often are population parameters known?

Accepted Answer

The answer of How often are population parameters known?...

Question 11

Consider yourself and describe 3 populations to which you belong?

Accepted Answer

The answer of Consider yourself and describe 3 populations to...

Question 12

In an experiment, a scientist is interested in the effect of a drug on reaction time. He gives various doses of the drug and then measures blood levels of the drug and reaction time in a driving task. What is the independent variable? The dependent variable?

Accepted Answer

The answer of In an experiment, a scientist is interested...

Question 13

Compare the method of authority with scientific method.

Accepted Answer

The answer of Compare the method of authority with scientific...

Question 14

Define dependent variable.

Accepted Answer

The answer of Define dependent variable....

Question 15

A social scientist measured the number of years of education of a random group of people and asked them their income. The scientist then found that the longer the education, the higher the income.

Accepted Answer

The answer of A social scientist measured the number of...

Question 16

How does natural observation research differ from true experiments?

Accepted Answer

The answer of How does natural observation research differ from...

Question 17

Give three examples of a variable applying to people.

Accepted Answer

The answer of Give three examples of a variable applying...

Question 18

What is the difference between rationalism and the scientific method?

Accepted Answer

The answer of What is the difference between rationalism and...

Question 19

Compare intuition and scientific method as methods of knowing.

Accepted Answer

The answer of Compare intuition and scientific method as methods...

Question 20

Define data.

Accepted Answer

The answer of Define data....

Quiz 1: Statistics and Scientific Method