5 Variables of Stats
Plots/Graphs
Randomn Surveys
Definitions
Experiments
100
The color of marbles in a jar are examples of this variable of statistics
What is categorical
100
What is the difference between Stem N Leaf Plots and Histograms?
Stem N Leaf Plots show individual data but Histogram do not
100
Name the survey(Def)
A type of probability sampling method in which sample members from larger population are selected according to a randomn starting point but with a fixed, periodic interval
Systematic Sampling
100
The average height of male giraffes is 5.5 or 18 ft, but there always is a chance in the world that the average does not apply to the animal. We are given 10 giraffes, 3 of them are the average height that a giraffe is (18ft), 5 are between (16ft, 17ft, 19ft, 13ft, 14ft), and the last two are 10ft and 40ft, what would the last two be called in correlation to the average height or near the average height
A) Super tall
B) Super small
C) An outlier
D) Giant
An Outlier
100
Control, Randomize, Replicate, Block
What are the 4 principles of experimental design?
200
This variable of statistics describes any forms of data which contains numbers
What is quantitative?
200
D
200
Simple Random Sampling takes large samples in order to reach every part of the populations
False
200
You are told by your boss to interview people about their opinion on skateboarders on whether or not they like the sport or they like the people who participate in this activity. Your boss specifically tells you to go to the skateboard park during a busy day and down the street to get as many interviews an opinions as possible. The interview concludes that everyone lkes skateboarding/ers apart from only one person. What would you call this type of interview or survey?
A) Biased
B) Unfair
C) Not fair
D) Not true
A) Biased
200
Control group and experimental group
What are the two test groups in a controlled experiment?
300
This distribution can take on any value within a specified range (infinite can be included)
What is continuous?
300
What is the difference between a line graph and a dot plot?
Line graph: When a Line is Drawn
Dot Plot: When points are marked on a coordinate system
300
Which of the following is not true about simple randomn sampling?
Simple random sampling is commonly referred to as SRS
Cluster Random sampling is a form of random sampling
You need to gather a list of the entire population in order to survey the population
A simple random sample is best used for smaller populations
You need to gather a list of the entire population in order to survey the population
300
When averages are taken across different groups, they can appear to contradict the overall averages. This is known as
A) Placebo effect
B) Simpson’s paradox
C) Placebo
D) Marginal distribution
B) Simpson's Paradox
300
The variable the remains constant between the two test groups
What is the controlled variable?
400
A variable in an experiment study that is also called a response variable.
What is a dependent variable?
400
A
400
Name 4 types of Random Surveys
Simple Random Survey
Stratified Random Survey
Cluster Random Sampling
Systematic Random Sampling
Mulitstage Random Sampling
400
Let's say you are given two data sets from two different sources and that you believe are homogeneous, from those two data sets you can get a better estimate of the common proportion and its standard deviation. You decide to combine both of the data sets for the purpose of finding or estimating the common proportion. What would you call this form of combining data sets or sources?
A) Alpha level
B) Pooling
C) Combing like terms
D) Significance level
B) Pooling
400
The collection of data as events unfold and identifies subjects in advance
What is a prospective study?
500
Out of a data set which consists of Household ID, Household Size, Annual Income, Number of Pets, selecting one category is an example of a variable classification
What is univariate?
500
B
500
Name the survey: Suppose a research team wants to determine the GPA of college students across the U.S. The research team has difficulty collecting data from all 21 million college students: decides to take a random sample of the population by using 4,000 students.
Stratified Random Sampling
500
Basketball players at Windham High School have an average percentage of 60% free throws made during basketball games, Tyler Walter because of his absence of playing time came up with a New Technique of making free throws and has integrated this "new technique" into practices in hopes of raising the percentage of made free throws per game. What is the null hypothesis.
A)New technique
B) 60% free throws made
C) Raising the percentage of made free throws
D) Absence of playing time
B) 60% free throws made
500
When samples naturally vary from one group to another among the target population
What is a sampling error?