U3.01
Used to summarize or describe data from samples and populations
descriptive statistics
A percentage that tells you how much you can expect your survey results to reflect the views of the overall population.
margin error
Counts the number of cells within a range that meet the given condition
COUNTIF
An imitation of a possible situation
simulaton
Most common number in a data set
mode
The total number of people in the group you are trying to study.
population or population size
subset of a population that seeks to accurately reflect the characteristics of the larger group.
representative sample
A grid of rows and columns in which you enter text, numbers, and the results of calculations.
Spreadsheet
The middle of the sets of numbers
median
simple random , convenience , cluster, stratified
Types of samples or samples
The ratio of the number of ways an event can occur to the total number of equally likely outcomes.
theoretical probability
Term used to describe assymmetry in data
skewness
Average of a data set
mean
process of collecting data from a small subsection of the population and then using it to generalize over the entire set
sample
The ratio of the number of times an event occurs to the total number of trials, or times that the activity is performed.
experimental probability
Data that has a longer tail on left of visual
Negative skewed
Which is NOT a measure of center in Descriptive Statistics:
range
mean
median
mode
range
use of sample to make reasonable guesses about the larger population
Inferential statistics
Percentage of data that falls within one standard deviation according to the three sigma rule
68%
Kurtosis measures this in the distribution of data
peakness