### Sample Hypothesis And Biased Statistic, Standard Deviation – Research Study

The key terms in these in these Statistic chapters Hypothesis, Biased Statistic, Variables, Standard Deviation, Population Parameter, Research Study, Sample, Variance, Research Subjects, Squared Deviations, Rational Method, . – Statistic

A good hypothesis must ____.

Allow for all variables to be measured

One sample is selected to represent scores in treatment 1 and a second sample is used to represent scores in treatment 2. Which set of sample statistics would present the clearest picture of a real difference between the two treatments?

M1 = 36, M2 = 40, and both variances = 6

A sample of n = 5 scores has a standard deviation of s = 5. What is the value of SS, the sum of the squared deviations for this sample?

100

Humans who participate in a research study are properly called research subjects

False

When you “know” that you don’t want to ride a roller coaster, even when everyone says it’s fun, your decision is based on the method of

Tenacity

Which of the following statements is correct regarding a biased statistic?

A biased statistic occurs when the average value of a statistic either underestimates or overestimates the corresponding population parameter.

What’s one limitation for the rational method?

People are generally not very good at reasoning

Which of the following is true of the scientific method?

You tell your aunt that you hate seafood, and she’s like, “Oh you must’ve gotten food poisoning from it some time.” (because she believes that food poisoning can make people dislike a food). Your aunt is using the:

Rational method

Which response option below is the standard deviation of the sample of n = 11 scores depicted below? (2, 5, 5, 6, 6, 7, 8, 8, 9, 10, 10)

#### 2.61

You want to know the weather outside so you ask Alexa (an A.I.) and it tells you info from the local weather station. What method of knowing did you use?

Method of authority

You have a terrible toothache, so you visit a dentist to find out what is wrong with your tooth. This is an example of using the method of authority.

True

Clinton is using the empirical method when he decides to eat a handful of berries to see if they are poisonous.

True

Which of the following values for the population standard deviation would cause a score located above the mean average to have the most extreme position in the distribution?

#### σ = 1

Dallas is using the rational method when, upon seeing that birds eating certain berries do not die, concludes that the berries are not poisonous.

True

Using a hypothesis to predict how people will behave demonstrates the use of induction.

False

A good hypothesis must ____.

Allow for all variables to be measured

One sample is selected to represent scores in treatment 1 and a second sample is used to represent scores in treatment 2. Which set of sample statistics would present the clearest picture of a real difference between the two treatments?

M1 = 36, M2 = 40, and both variances = 6

A sample of n = 5 scores has a standard deviation of s = 5. What is the value of SS, the sum of the squared deviations for this sample?

#### 100

Humans who participate in a research study are properly called research subjects

False

When you “know” that you don’t want to ride a roller coaster, even when everyone says it’s fun, your decision is based on the method of

Tenacity

Which of the following statements is correct regarding a biased statistic?

A biased statistic occurs when the average value of a statistic either underestimates or overestimates the corresponding population parameter.

A sample of n = 15 scores has M = 20 and s 2 = 9. What is the sample standard deviation?

3

On an exam with a mean of µ = 80, a person scores X = 90. Which of the following values for the standard deviation would position this person highest within the class?

#### σ = 2

What type of research studies try to solve problems in everyday life?

Applied

Passive deception refers to ____.

Withholding information from participants

What is one of the guidelines for using deception in a research study?

The deception cannot conceal a real risk or danger to participants.

A population of N = 10 scores has µ = 21 and σ = 3. What is the population variance?

#### 9

Which of the following actions would have the effect of either changing the size or direction (sign) of a Pearson r value pertaining to a set of X and Y scores?

Multiplying each X and Y score by a negative constant value

A good hypothesis must ____.

Allow for all variables to be measured

One sample is selected to represent scores in treatment 1 and a second sample is used to represent scores in treatment 2. Which set of sample statistics would present the clearest picture of a real difference between the two treatments?

M1 = 36, M2 = 40, and both variances = 6

A sample of n = 5 scores has a standard deviation of s = 5. What is the value of SS, the sum of the squared deviations for this sample?

#### 100

Humans who participate in a research study are properly called research subjects

False

When you “know” that you don’t want to ride a roller coaster, even when everyone says it’s fun, your decision is based on the method of

Tenacity

Which of the following statements is correct regarding a biased statistic?

A biased statistic occurs when the average value of a statistic either underestimates or overestimates the corresponding population parameter.

Which of the following values for the population standard deviation would cause a score located above the mean average to have the most extreme position in the distribution?

#### σ = 1

Dallas is using the rational method when, upon seeing that birds eating certain berries do not die, concludes that the berries are not poisonous.

True

Using a hypothesis to predict how people will behave demonstrates the use of induction.

False

A good hypothesis must ____.

Allow for all variables to be measured

One sample is selected to represent scores in treatment 1 and a second sample is used to represent scores in treatment 2. Which set of sample statistics would present the clearest picture of a real difference between the two treatments?

M1 = 36, M2 = 40, and both variances = 6

A sample of n = 5 scores has a standard deviation of s = 5. What is the value of SS, the sum of the squared deviations for this sample?

#### 100

Humans who participate in a research study are properly called research subjects

False

When you “know” that you don’t want to ride a roller coaster, even when everyone says it’s fun, your decision is based on the method of

Tenacity

Dallas is using the rational method when, upon seeing that birds eating certain berries do not die, concludes that the berries are not poisonous.

True

Which of the following values for the population standard deviation would cause a score located above the mean average to have the most extreme position in the distribution?

#### σ = 1

You want to know the weather outside so you ask Alexa (an A.I.) and it tells you info from the local weather station. What method of knowing did you use?

Method of authority

You have a terrible toothache, so you visit a dentist to find out what is wrong with your tooth. This is an example of using the method of authority.

True

Clinton is using the empirical method when he decides to eat a handful of berries to see if they are poisonous.

True

Which of the following actions would have the effect of either changing the size or direction (sign) of a Pearson r value pertaining to a set of X and Y scores?

Multiplying each X and Y score by a negative constant value

Passive deception refers to ____.

Withholding information from participants

What is one of the guidelines for using deception in a research study?

The deception cannot conceal a real risk or danger to participants.

A population of N = 10 scores has µ = 21 and σ = 3. What is the population variance?

#### 9

You want to know the weather outside so you ask Alexa (an A.I.) and it tells you info from the local weather station. What method of knowing did you use?

Method of authority

You have a terrible toothache, so you visit a dentist to find out what is wrong with your tooth. This is an example of using the method of authority.

True

Clinton is using the empirical method when he decides to eat a handful of berries to see if they are poisonous.

True

Which of the following actions would have the effect of either changing the size or direction (sign) of a Pearson r value pertaining to a set of X and Y scores?

Multiplying each X and Y score by a negative constant value

Passive deception refers to ____.

Withholding information from participants

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