Summer Vocab Flashcards
what is statistics?
the study of variability
what is variability?
how things differ
what are the 2 branches of AP stats?
inferential and descriptive
what are descriptive stats?
a description of the data you have collected
what are inferential stats?
Inferences made about an entire population using data from a small sample
compare descriptive and inferential stats
descriptive data is a description of the data collected and inferential data is an inference made about a larger sample based off of the data collected
what is data?
any collected information
what is a population?
the group you’re interested in
what is a sample?
a subset of a population, taken to make inferences about the population
compare population to sample
populations are large, and samples are small groups of the population. we take samples to make inferences
what do we use to estimate parameters?
statistics
compare data to statistics
statistics are summary of data
what is a parameter?
a numerical summary of a population…mean, median, range of a population. the mean data from each member of a population is a parameter
what is a statistic?
a numerical summary of a sample. mean, median, range of a sample
compare DATA-STATISTIC - PARAMETER using categorial example
data is the individual measures, statistic and parameter is an assumption based off of data
what is a census?
a collection of information from every member of the population
does a census make sense?
it is okay for small populations, like a classroom, but not bigger groups of people
what is the difference between a parameter and a statistic?
statistics come from statistics and parameters come from statistics
one piece of individual data is called a ?
datum
the average of a group of data is called a ?
statistic
what is the difference between a sample and a census?
a sample is information from a small part of the population, a census is info from the entire population. you can get a parameter from a census, but you can only get a statistic from a sample
use the following words in a sentence: population, parameter, census, sample, data, statistics, inference, population parameter
i was curious about a population parameter, but the census would take too long. so i took a sample from my school and collected data. i used the data to
