Statistics 1
Let's assume you are conducting an experiment to determine the effect of a new drug on the incidence of epileptic seizures. You select 20 epileptics from the 150 epileptics being treated at a nearby hospital and administer the drug to them. You record the number of seizures in each of the 20 subjects for one month. The average (mean) number of seizures for the 20 subjects is called _________.
A STATISTIC
Inferential statistics _________.
ALSO USES METHODS OF DESCRIPTIVE STATISTICS AND ALLOWS ONE TO MAKE INFERENCES ABOUT A POPULATION BASED ON SAMPLE DATA
A population is defined as _________.
B AND C
In order to estimate the height of all students at your university, let's assume you have measured the height of all psychology majors at the university. The resulting raw scores are called _________.
DATA
Let's assume you are conducting an experiment to determine the effect of a new drug on the incidence of epileptic seizures. You select 20 epileptics from the 150 epileptics being treated at a nearby hospital and administer the drug to them. You record the number of seizures in each of the 20 subjects for one month. Then you record the number of seizures in each of the 20 subjects for one month without the drug. Being compulsive, you also record the number of seizures for the remaining 130 epileptics for one month. The number of seizures for each of the 130 epileptics constitutes _________.
DATA
Organizing, presenting, and summarizing data would all fall under the inferential branch of statistics.
FALSE
T/F: A parameter is any summary number computed from the entire population.
FALSE
T/F: A sample is any summary number computed from statistical data.
FALSE
T/F: A summary number computed using population data is called a statistic.
FALSE
T/F: Descriptive statistics are used to make inferences about the population.
FALSE
T/F: Descriptive statistics require going beyond the actual data that has been collected.
FALSE
T/F: If the mean for exam #1 is 78.4 for my 11:00 Stats class, then the mean for my class is a statistic since it did not include other professor's classes.
FALSE
T/F: Inferential statistics involve making decisions about samples based on population data.
FALSE
T/F: Organizing, presenting, and summarizing data would all fall under the inferential branch of statistics.
FALSE
T/F: The two branches of statistics are deductive and inductive.
FALSE
In order to estimate the average (mean) weight of all professional football players, an investigator determines the weight of the "Dallas Cowboy" players. The average (mean) weight of all professional football players is called a _________.
PARAMETER
In order to estimate the average (mean) weight of all professional football players, an investigator determines the weight of the "Dallas Cowboy" players. All professional football players constitute a _________.
POPULATION
In order to estimate the ratio of white to black students in his college, a professor determines the proportion of whites and blacks in his class. The students of the entire college are called a _________.
POPULATION
Let's assume you are conducting an experiment to determine the effect of a new drug on the incidence of epileptic seizures. You select 20 epileptics from the 150 epileptics being treated at a nearby hospital and administer the drug to them. You record the number of seizures in each of the 20 subjects for one month. The 150 epileptics constitute _________.
POPULATION
In order to estimate the amount of TV watched by New York City adults, a sociologist surveys a random sample of adults from this city. The average (mean) of the raw scores is a _________.
STATISTIC
In inferential statistics the object is usually to generalize from a _________ to a _________.
SAMPLE;POPULATION
In order to estimate the height of all students at your university, let's assume you have measured the height of all psychology majors at the university. The average (mean) value of the measured height scores constitutes a _________.
STATISTIC
T/F: A parameter is any summary number computed from sample data.
TRUE
T/F: A sample is a subset of a population.
TRUE
T/F: A statistic is any summary number computed from sample data.
TRUE
T/F: A statistic is to a sample as a parameter is to a population.
TRUE
T/F: A summary number computed using population data is called a parameter.
TRUE
T/F: A summary number computed using sample data is called a statistic
TRUE
T/F: If one measured the height of all the women at a university and took an average of the data, the university women would be a sample of the population of all university women in the world.
TRUE
T/F: If the mean for exam #1 is 78.4 for my 11:00 Stats class, then the mean for my class is a parameter.
TRUE
T/F: Inferential statistics involve making decisions about populations based on sample data.
TRUE
T/F: One definition of statistics is the branch of mathematics that uses data to answer questions and make predictions.
TRUE
T/F: Prediction and estimation are two key functions of inferential statistics.
TRUE
T/F: The two branches of statistics are descriptive and inferential.
TRUE
T/F: When data has not yet been analyzed, this is called raw data.
TRUE
Let's assume you are conducting an experiment to determine the effect of a new drug on the incidence of epileptic seizures. You select 20 epileptics from the 150 epileptics being treated at a nearby hospital and administer the drug to them. You record the number of seizures in each of the 20 subjects for one month. The 20 subjects constitute _________.
population
In order to estimate the amount of TV watched by New York City adults, a sociologist surveys a random sample of adults from this city. All of the New York City adults constitute a _________.
sample
In order to estimate the attention level of college undergraduates in the United States, a psychologist measures the attention span of the undergraduates at a local university. The mean of these scores is a _________.
statistic
T/F: A summary number computed using parameter data is called a population.
true