Worksheetsquiz 1 getting started
Total questions: 25
Worksheet time: 13mins
What is the main goal of statistics?
Deductive reasoning
Inductive reasoning
making predictions
describing data
What is a target population?
A group from which a sample is taken
A physical list of all members of a sampled population population
Every member of the population
A particular group of interest
What is the difference between a parameter and a statistic?
Parameters describe a sample characteristic, while statistics describe a population characteristic.
Parameters describe a population characteristic, while statistics describe a sample characteristic.
Parameters are values that never change, while statistics change over time.
Parameters and statistics are the same thing.
Identify the population and the sample in the following scenario: In a survey, 359 college students at the University of Jackson were asked if they had tried the October flavor of the month at the campus coffee shop. Eighty-three of the students surveyed said yes.
Population: 359 college students; Sample: 83 college students
Population: All college students in the world; Sample: 83 college students at the University of Jackson
Population: All college students at the University of Jackson; Sample: 359 college students
d) Population: 83 college students; Sample: 359 college students
What is the difference between descriptive and inferential statistics?
Descriptive statistics summarize and display data, while inferential statistics use data to estimate population parameters.
Descriptive statistics test hypotheses, while inferential statistics summarize data.
Descriptive statistics estimate population parameters, while inferential statistics summarize data.
Descriptive statistics and inferential statistics are the same thing.
Identify the type of statistics used in the following excerpt: "AOL had 900 journalists, 500 of them at its local Patch news operation.... By the end of 2011, Bloomberg expects to have 150 journalists and analysts for its new Washington operation, Bloomberg Government."
Descriptive statistics
Inferential statistics
Both descriptive and inferential statistics
Neither descriptive nor inferential statistics
What is a sampling frame?
A subset of the population
A numerical description of a population characteristic
A physical list of all members of the sampled population
A group of interest in a survey
In a census, data are obtained from:
Every member of the population
A random sample of the population
A specific subgroup of the population
A select few individuals from the population
Which branch of statistics involves using descriptive statistics to estimate population parameters?
Exploratory analysis
Confirmatory analysis
Inferential statistics
Descriptive statistics
In statistics, what is the term for a value or characteristic that changes among members of the population?
What type of study observes data that already exist without influencing the data collection process?
Which type of sampling method selects every nth member of the population?
In a double-blind experiment, who is aware of the group assignments of subjects?
What is the primary difference between a control group and a treatment group in an experiment?
Which sampling method divides the population into subgroups called strata, where the grouping variable is correlated with the measurement variable?
What is the primary purpose of administering a placebo in an experiment?
Which type of study follows a group of individuals over an extended period to examine long-term effects?
Longitudinal study
What is the primary goal of randomizing control and treatment groups in an experiment?
Is the variable "number of toes" a qualitative (categorical) or quantitative (numeric) variable?
Is the variable "Grade point Average" discrete or continuous?
Suppose all students in a statistics class were asked what pizza topping is their favorite. What level of measurement do these data represent?
The birth years of your classmates are collected. What level of measurement are these data?
Which of the following is an example of data at the interval level of measurement?
Suppose you want to determine the amount of red primary dye necessary to make one gallon of each shade of red paint. What type of data is this?
Boiling points (on the Celsius scale) for various caramel candies represent data of which level of measurement?
