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vocab stats

QuestionAnswer
z score describes how many standard deviations a data item in a normal distribution lies above or below the mean
random a sample obtained in such a way that every element in the population has an equal chance of being selected
frequency distribution if data values are listed in one column and the adjacent column indicates the number of times each values occurs, the data presentation
sample subgroup of the population
group frequency distribution listen in one column, organizing the data into classes
histogram bars touch
frequencies represents data values
stem and leaf plot separates each data item into two parts
mean average, add all numbers divide by how many numbers
median middle
mode occurs most often
midrange adding lowest and highest and dividing by 2
range difference between highest and lowest data values
standard deviation shows how spread out the numbers in a data set are from their average or mean
Created by: emt2023hawkins
 

 



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