probability
the definition of mutually exclusive
events that cannot happen at the same time.
What is the normal distribution rule percent within 1 standard deviation?
68%
the definition of statistics is...
the study of how to collect, organize, analyze, and interpret numerical information/data.
the three data collection techniques are...
observations, experiments, surveys
an independent event is...
when the first event does not affect the second one.
the cost of each game is equal to the expected value
How many standard deviations from the mean is the value 30, with a mean of 10 and a standard deviation of 10.
2
an individual in statistics is...
people/objects included in a study.
True of false... quantitative research is free from bias.
true
a contingency table shows...
all of the possibilities in a table.
A negative expected value indicates...
"favor of the house", the player loses money for every game they play.
Z score is...
the number of standard deviations a value is away from the mean.
what is the difference between population data and sample data?
population data is when every individual in a population has their data available, while sample data is when data is only available for a portion of a population.
What are the two types of data?
"how many different arrangements can be made of a certain group out of a larger group, where order does not matter?"
To make a game fair, you must...
subtract the expected value from the cost of the game.
-2
the factor that varies, which may cause in a problem in statistics.
value that is sharply defined and measured.
the equation for permutations is
nPr = n! / (n-r) !
The 4 parts of a fair game table are...
The equation to find the z score is...
z = x-M / standard deviation
The two types of samples are...
representative and biased.
Accuracy is...