Show:
Unit 1
Unit 2
Unit3/Unit4
Unit 5
Unit 9
100
a field that studies data in order to make decisions
what is statistics?
100
shows how far a number is from the mean
What is a z-score?
100
the probability of rolling a 3 on a six sided die
What is 1/6 or .167
100
the mean, median, and mode
What is the property of a Normal Distribution?
100
a relationship between two variables
What is a correlation?
200
sampling from a group of people that are easy to obtain
What is convienence sampling?
200
the table that shows classes or intervals of data entries with a count of the number of entries in each class
What is frequency distribution?
200
independent or dependent: selecting a king from a standard deck, not replacing it, then selecting a queen
What is dependent?
200
95% of the bell curve
What is the +2 and -2 deviations from the mean on the bell curve
200
yes or no: if the r value is greater than the critical value, then it's good for predictions
What is yes
300
true or false: a statistic is a measure that describes a population characteristic
What is false?
300
ordering the data set, finding the median, and splitting the data set into 4 parts
What is finding the quartiles of data set?
300
based on observations
What is empirical probability?
300
true or false: explanatory is independent
What is true
400
an investigation of one or more statistics in a population and a treatment is applied to a part of a population and responses are observed
What is the difference between a survey and an experiment?
400
put the sum of the lower and upper limits of the class divided by 2
What is mid point?
400
a variable that has a countable number of outcomes
What is discrete?
400
Value-Mean/Standard Deviation
What is the formula for finding the z -Score?
400
the correlation coefficient of this data x: -14 -12 -5 -8 -10 -11 -9 -7 -6 -13 y: -11 -9 -8 0 -3 -7 -2 2 5 -9
What is .989?
500
the focus, the population, and the appropiate collection of data
What is the characterists of a well designed study?
500
1. Identify variables 2. Developing a detailed plan 3. collect data 4. describe data 5. interperate data 6. identify possible errors 7. wdowling18
what are the characteristics of a well designed study?
500
35 sophomores, 35 juniors, 49 seniors, are randomly selected from 230 sophomores, 280 juniors, and 577 seniors
What is stratified?
500
number of cups of coffee sold in the cafeteria
What is discrete?
500
the equation of the regression line for the given data x -5 -3 4 1 -1 -2 0 2 3 -4 y 11 -6 8 -3 -2 1 5 -5 6 7
What is -0.206x+2.097