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1

A _______ is a numerical measurement describing some characteristic of population.

Parameter

2

A ______ is a numerical measurement describing some characteristic of a sample.

Statistic

3

The Gallup Organization contacts 1038 male university graduates who have a white collar job and asks whether or not they had received a raise at work during he past 4 months.

What is the Population Study?

Male university graduates who have a white collar job.

4

The Gallup Organization contacts 1038 male university graduates who have a white collar job and asks whether or not they had received a raise at work during he past 4 months.

What is the sample in he study?

The 1038 male university graduates who have a white collar job.

5

Some people responded to this​ request: "Dial​ 1-900-PRO-LIFE to participate in a telephone poll on abortion. ​($4.45 per minute. Average​ call: 2 minutes. You must be 1717 years​ old.)

Identify the sample

The sample is all individuals who responded.

6

Some people responded to this​ request: "Dial​ 1-900-PRO-LIFE to participate in a telephone poll on abortion. ​($4.45 per minute. Average​ call: 2 minutes. You must be 1717 years​ old.)

Identify the population.

The population is all individuals who are at least 17 years of age.

7

Some people responded to this​ request: "Dial​ 1-900-PRO-LIFE to participate in a telephone poll on abortion. ​($4.45 per minute. Average​ call: 2 minutes. You must be 1717 years​ old.)

Is the sample likely to be representative of the​ population?

No, the sample is not likely to be representative of the population because those with strong opinions about abortion are more likely to respond.

8

How do a parameter and a statistic​ differ?

A parameter is a numerical measurement of a​ population; a statistic is a numerical measurement of a sample.

9

Determine whether the given value is a statistic or a parameter.

In a study of all 3887 students at college, i is found that 45% own a computer.

Parameter because the value is a numerical measurement describing a characteristic of a population.

10

A variable is at the ______ level of measurement if he values of the variable name, label, or categorize.

Nominal

11

A variable is at the​ _______ level of measurement if it allows for the values of the variable to be arranged in a specific order but the differences between values either cannot be determined or are meaningless.

Ordinal

12

A variable is at the​ _______ level of measurement if it allows for the values of the variable to be arranged in a specific order and the difference between any two values is​ meaningful, but the ratio is not.

Interval

13

A variable is at the​ _______ level of measurement if it allows for the values of the variable to be arranged in a specific order and both differences and ratios of values have meaning.

Ratio

14

What is a voluntary response​ sample?

A sample in which the subjects themselves decide whether to be included in the study.

15

Which sampling method divides the population up into​ sections, randomly selects some of those​ sections, then chooses all the members from the selected sections to​ study?

Cluster

16

Which sampling method subdivides the population into categories sharing similar characteristics and then selects a sample from each​ subdivision?

Stratified

17

A television station asks its viewers to call in their opinion regarding the desirability of programs in high definition TV.

Which type of sampling method is used?

Convenience

18

To estimate the percentage of defects in a recent manufacturing​ batch, a quality control manager at Toyota selects every 14th car that comes off the assembly line starting with the seventh until she obtains a sample of 130130 cars.

Systematic

19

To determine customer opinion of their service​, Business Depot randomly selects 120 stores during a certain week and surveys all customers present in the store.

Cluster

20

Categories only

Nominal

21

Categories with some order

Ordinal

22

Differences but no natural starting point

Interval

23

Differences and a natural starting point

Ratio