Deck 23: Conclusion

Question 1

Which type of data involves categories?

A)Interval data
B)Ordinal data
C)Nominal data
D)None of these

Answer 1

Nominal data

Question 2

If the difference between the null hypothesis and your test statistic is very large,you reject the null hypothesis.

Answer 2

True

Question 3

If you use information about a sample to draw a conclusion about a population,you are doing:

A)Inferential parameters
B)Descriptive statistics
C)Inferential statistics
D)The wrong kind of statistics

Answer 3

Inferential statistics

Question 4

The source of statistical inference is the sampling distribution.

Question 5

Statistical inferences are facts and are not based on probability.

Question 6

Which of the following is NOT a type of data?

A)Parameter data
B)Nominal data
C)Ordinal data
D)Interval data

Question 7

The techniques used to analyze ordinal data involve a ranking procedure.

Question 8

We can use analysis of variance (ANOVA)in place of the t-test when comparing two population means.

Question 9

We can use regression analysis with indicator variables in place of analysis of variance (ANOVA).

Question 10

A procedure with a very small probability of a Type I error will also have a very small probability of a Type II error.

Question 11

The validity of any statistical outcome depends on the validity of its sample.

Question 12

Which type of data involves ratings?

A)Interval data
B)Ordinal data
C)Nominal data
D)None of these

Question 13

The same statistical techniques apply whether the data is interval,nominal,or ordinal.

Question 14

In hypothesis testing,you start out assuming the null hypothesis is false.

Question 15

The Student-t and the F-distributions have no relationship to each other.

Question 16

The standard normal distribution and the Chi-squared distribution are related to each other.

Question 17

Which type of data involves real numbers?

A)Nominal data
B)Interval data
C)Ordinal data
D)None of these choices.

Question 18

If the probability of making a Type II error decreases,the probability of making a Type I error increases.

Question 19

The techniques used to analyze nominal data involve a ranking procedure.

Question 20

A larger sample increases the confidence level of a confidence interval.

Question 21

Which of the following is an example of ordinal data?

A)The weight of a newborn baby.
B)The gender of a baby.
C)The number of siblings a baby has.
D)Your order of preference of three baby names.

Question 22

If your hypothesis test has a very small probability for a Type I error,how does this affect the probability of a Type II error?

A)It will increase.
B)It will decrease.
C)It will be the same as for a Type I error.
D)No way of knowing without more information.

Question 23

In any hypothesis test there are two possible errors,called ____________________ and ____________________.

Question 24

How do the requirements of nonparametric and parametric techniques compare?

A)Nonparametric techniques have more restrictions than parametric techniques.
B)Nonparametric techniques have fewer restrictions than parametric techniques.
C)Both types of techniques have the same requirements.
D)There are no requirements for parametric or nonparametric techniques.

Question 25

We can improve the exactitude of a confidence interval estimator by increasing the ____________________.

Question 26

The standard that we use to decide whether or not to reject a null hypothesis is the probability of a(n)____________________.

Question 27

If the difference between our test statistic and the null hypothesis is large,we reject the ____________________ hypothesis.

Question 28

The sampling distributions that are used for interval data are the Student-t and the:

A)Chi-squared distribution.
B)Binomial distribution.
C)Discrete distribution.
D)F-distribution.

Question 29

In analyzing interval data,we attempt to explain as much of the ____________________ as possible.

Question 30

Which of the following is an example of interval data?

A)The weight of a newborn baby.
B)The gender of a baby.
C)Whether or not a baby weighs more than 10 pounds.
D)Your order of preference of three baby names.

Question 31

Which of the following statements is true?

A)Descriptive techniques summarize information from samples.
B)Inferential techniques allow us to make estimates about a population.
C)Inferential techniques allow us to draw conclusions about a population.
D)All of these statements are true.

Question 32

The techniques used on ordinal data are based on ranking procedures.We call these ____________________ techniques.

Question 33

____________________ techniques allow us to make estimates and draw conclusions about populations from samples.

Question 34

Formulas for confidence intervals and test statistics all come from ____________________ distributions.

Question 35

We can decrease the probability of a Type II error by increasing the ____________________.

Question 36

The sampling distributions that are used for nominal data are the standard normal distribution and the:

A)Chi-squared distribution.
B)Binomial distribution.
C)F-distribution.
D)Interval distribution.

Question 37

The width of a confidence interval ____________________ when more data is collected.

Question 38

There are three types of data: ____________________; ____________________; and ____________________.

Question 39

Which of the following data collection methods is more likely to lead to a definitive conclusion?

A)Data collected through observation.
B)Data collected through an experiment.
C)Data collected through the use of volunteers.
D)Data collected through a survey.

Question 40

Which of the following is an example of nominal data?

A)The gender of a baby.
B)The weight of a newborn baby.
C)The number of other babies born on the same day.
D)Your order of preference of three baby names.

Question 41

We often use a(n)____________________ technique to analyze data when the conditions for a(n)____________________ technique are not satisfied.

Question 42

In nonparametric statistics,the population must be normally distributed.

Question 43

The statistical techniques used to analyze ordinal data are the same as those used to analyze interval data.

Question 44

To ensure the validity of a statistical technique,we must first check the required ____________________.

Question 45

One prevailing idea amongst statisticians is the idea of "Garbage in / garbage out." Explain the meaning of this phrase and give an example of it.

Question 46

Two ways in which we can obtain data are through ____________________ or ____________________.

Question 47

Describe a plan for estimating the average GPA at your university by using inferential statistics.Include which statistical technique you plan to use to draw your conclusions.