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WorksheetsStats - Ch 1 & 2 Vocab
Total questions: 87
Worksheet time: 57mins
_________ is the collection of ALL individuals or items under consideration in a statistical study.
_________ is the collection of data from EVERY member of a population.
_________ is that PART of the population from which information is obtained.
_________ is a numerical measurement describing some characteristic of a POPULATION.
_________ is a numerical measurement describing some characteristic of a SAMPLE.
_________ involves data that can be arranged in some order, the difference between any two data values is meaningful, and there exists a natural zero starting point.
Nominal
Ordinal
Interval
Ratio
_________ involves data that can be arranged in some order, but with the additional property that the difference between any two data values is meaningful. However, there is no natural zero starting point.
Nominal
Ordinal
Interval
Ratio
Military Rank
Nominal
Oridinal
Interval
Ratio
Crime rate
Nominal
Ordinal
Interval
Ratio
Temperature reading in baking
Nominal
Ordinal
Interval
Ratio
Color of the student's nail polish in statistics class.
Nominal
Ordinal
Interval
Ratio
The birth order
Nominal
Ordinal
Interval
Ratio
Height of the buildings
Nominal
Ordinal
Interval
Ratio
Car brand
Nominal
Ordinal
Interval
Ratio
_________ involves data that can be arranged in some order, but with the additional property that the difference between any two data values is meaningful with a true zero starting point.
Nominal
Ordinal
Interval
Ratio
Which is an example of a random sample?
Polling the first 10 people who enter a room
Asking a survey question to people who call in
Drawing 10 names from a hat
Why should samples be randomly selected?
for control
to reduce bias
so we don't get the same answers from everyone
a method to model random events
simulation
random number generator
experiment
census
a numerical facsimile or representation of a real-world phenomenon.
simulation
random number generator
experiment
census
results from OMITTING population members from the sample frame
placebo
outlier
undercoverage
sampling frame
a list of individuals from which a sample is actually selected
census
population
undercoverage
sampling frame
people or objects included in a study
block
control
individuals
variables
a characteristic of the individual to be measured or observed
statistic
placebo
sampling
variable
Use a variety of sampling methods to create successively smaller groups at each stage.
cluster sampling
randomization
replication
multistage sampling
occurs when a subject receives no treatment but(incorrectly) believes he or she is in fact receiving treatment and responds favorably.
Placebo Effect
Faker
Bias
Lurking Variable
a group of individuals sharing some common features that might affect treatment
Block
Convenience Sample
Control group
Stratified Group
neither the individuals in the study nor the observers know which subjects are receiving the treatment.
Placebo Effect
Double Blind Experiement
Observational Study
Randomization
used to assign individuals to the two treatment groups.. to help prevent bias.
Replication
Double Blind Experiement
Observational Study
Randomization
a group that is used to account for influence of other known or unknown variables.
Block
Convenience Sample
Control group
Stratified Group
a process to obtain info about your individuals by asking various ?s
survey
sample
statistic
randomization
a type of variable is one for which no data have been collected but that nevertheless has an influence on other variables in the study.
Confounding Variable
Lurking Variable
when the effects of one variable cannot be distinguished from the effects of the other
Confounding Variable
Lurking Variable
Graphics should NOT ...
display accurate & honest data
distort the data
allow viewers to think about substance
be colorful
________is a method of exploratory data analysis that is used to rank-order and arrange data into groups.
histogram
stem and leaf
bar graph
circle graph
Uses tally marks in groups of 5
histogram
stem and leaf
ogive
frequency table
_______breaks the digits of each data value into two parts
histogram
stem and leaf
ogive
frequency table
What is something a bar graph does NOT need?
TItle & Labels
Key/Legend
Appropriate scale
Percentages
To make sure the scale is consistent we might use the ___ to skip some numbers at the start of an axis.
skipper scale squiggle
Jump Scale zig zag
Jump scale squiggle
Zig Zag mark
Uses bars that touch
bar graph
pareto chart
frequency table
histogram
A visual display proportional parts of the total population that share a common characteristic.
pie chart
pareto chart
ogive
time series chart
data are plotted in order of occurrence
pie chart
pareto chart
time series chart
ogive
data consist of measurements of the same variable for the same subject taken at regular intervals over a period of time.
pie chart
pareto chart
ogive
time series chart
Used to identify the frequency of events or categories in decreasing order of frequency of occurrence.
pareto
ogive
pie chart
time series chart
Used to organize large sets of quantitative data into smaller intervals or classes
circle graph
ogive chart
time series chart
frequency table
puts data into classes or intervals
circle graph
ogive chart
pareto chart
frequency table
difference between two consecutive class' lower limits
class boundaries
class width
class midpoint
class frequency
(Largest-Smallest) divided by # of classes
class limits
class width
class frequency
class boundaries
1st lower class limit + class width
class boundaries
class range
class midpoint
upper class limit
Always round up
class boundary
class width
class midpoint
class range
add & subtract 0.5 to the class limit to get this
class boundary
class width
class midpoint
class range
The center of EACH class...often used as a representative value of the entire class
class boundary
class width
class midpoint
class range
(lower limit + upper limit)/2
class boundary
class width
class midpoint
class range
class frequency/ total frequencies
relative frequency
cumulative frequency
class midpoint
class range
the sum of the frequencies for that class and all previous classes.
relative frequency
cumulative frequency
class average
class range
Ogive
A graph that displays the largest to smallest
a graph that displays cumulative frequencies
Used to show a relationship between a sample and a population
Used to display proportional parts of the total population
Histogram
A graph that displays the largest to smallest
a graph that displays cumulative frequencies
Used to show a relationship between a sample and a population
Used to display proportional parts of the total population
Pareto chart
A graph that displays the largest to smallest
a graph that displays cumulative frequencies
Used to show a relationship between a sample and a population
Used to display proportional parts of the total population
Distribution type that has 2 distinct peaks separated by at least one class
uniform
bimodal
mound
skewed
Distribution type that is equally distributed in all classes
uniform
bimodal
mound
skewed
Distribution type that is shifted to one side of the graph
uniform
bimodal
mound
skewed
data values that are very different from other measurements in the data set
exception
outlier
nonconformist
irregularity
Stem & Leaf can show the distribution of the data
True
False
The bars are arranged from left to right according to decreasing height on a bar graph
True
False
On a histogram the y axis represents frequency
True
False
360 degrees = 100%
True
False
On a time series graph the y axis represents time
True
False
The bars are arranged from left to right according to decreasing height on a pareto chart
True
False
On a histogram, the bar length or height on a bar graph ALWAYS represents the frequency of an event.
True
False
The classes or intervals are constructed so that each data value falls into exactly one class.
True
False
if the sample is large enough, the distribution of the sample should be reasonably similar to the population's shape
True
False
