Stats - Week 1
The midterm exam scores of 14 out of the 36 students in your economics class. (identify population)
All the students in your economic class
Temperatures in Kelvin of various sites on the moon are an example of which type of data?
Continuous
62% of all students at the local university voted in the last election.
Descriptive Statistic
The numbers of suitcases loaded onto various airplanes are an example of which type of data?
Discrete
A survey of 3389 people revealed that 54% are self-conscious about their weight; therefore it can be assumed that 54% of the U.S. population are self-conscious about their weight.
Inferential Statistic
When conducting legal experiments on animals, a researcher needs to obtain consent from the .
Institutional review board
Time of day a person woke up each day for a year
Interval
Genders are an example of which type of data
Neither
House type of real-estate listings in Jacksonville, FL (cottage, condo, ranch, etc.)
Nominal
Places earned in various events by members of a track team at a meet
Ordinal
Political orientation as reported by students in a political science class (left, center, right)
Ordinal
The average price of a house in the new subdivision is $311,000.
Population Parameter
Heights of ceilings in a building
Ratio
Monthly amounts of rain in Seattle over 10 years
Ratio
The number of times 15 out of 30 students on your floor order take out in a week
Sample
A recent poll of 1771 corporate executives showed that the average price of their cars is $39,400.
Sample Statistic
A recent poll of 2940 corporate executives showed that the average price of their cars is $31,800.
Sample Statistic
parameter
a numerical description of a population characteristic
population
a particular section, group, or type of people or animals living in an area or country.
variable
a value or characteristic that changes among members of the population
data
are the counts, measurements or observations gathered about a specific variable in a population in order to study it
inferential statistics
as a science,involves using descriptive statistics to estimatepopulation parameters.
Your uncle checks the tires on his car every five days for signs of uneven wear and proper inflation.
case study
For budget purposes, a secretary needs to know the average cost of health plans of instructors at their school.
census
include each member of the group you wish to study
census
A random number generator is used to choose five cities. Then a political strategist collects data from each person in these cities.
cluster sampling
a pollster interviews each member from each of the fifteen randomly chosen math classes at a university.
cluster sampling
Researchers are investigating a gluten-free diet. There is a group of people who they will monitor that they have told to eliminate any gluten from their diet. In addition to the lack of gluten, there may be some impact of an altered caloric intake which was indirectly caused by eliminating gluten. What can we call this impact?
confounding variable
Quantitative data
counts or meaurements
The numbers of TV shows taped in Los Angeles on various days are an example of which type of data?
discrete
In a experiment, neither the partaker nor those conducting the experiment know whether the partaker will receive a treatment.
double blind
census
every member of the population
experiment
generates data to help identify cause and effect relationships
Qualitative data
labels or descriptions of traits
An underwriter reviews fifteen weather reports from hurricanes to compare for common factors.
meta-analysis
Eye colors extracted from a collection of passport photos
nominal
In order to help decide when and where to advertise, an electronics repair company decided to pull invoices and tally what types of devices were repaired. There were twenty-five devices repaired that month. What is the level of measurement for the data? Are the data qualitative or quantitative?
nominal; qualitative
sample statistic
numerical descriptions of sample characteristics
A gift shop owner wants to study his average annual profits.
observational
observational study
observes data that already exists
The high school GPAs of all the coaches in the NFL
population
Bank account numbers are an example of which type of data?
qualitative
Boiling points in degrees Celsius for various substances are an example of which type of data
quantitative
Goals scored during a soccer game are an example of which type of data?
quantitative
Continuous data
quantitative data that can take on any value in a given interval and are usually measurements
Discrete data
quantitative data that can take on only particular values and are usually counts
descriptive statistics
science that gathers, sorts, summarizes, and displays the data
a scientist chooses one person at random from each math class
stratifed sampling
sample
subset of the population from which data are collected
The ages of a sample of 37 parents of your classmates. (identify sample)
the 37 parents of your classmates
Statistics
the science of gathering, describing, and analyzing data. the actual numerical descriptions of sample data
