algebra 2 topic test 2 vocabulary Flashcard

question

random sample
answer

all members of the population are equally likely to be chosen
question

normal distribution
answer

has data that vary randomly from the mean
question

percentiles
answer

the value below which a percentage of data falls
question

measures of variation
answer

describes how the data in a data set are spread out
question

sample
answer

a part of a population
question

outlier
answer

a number that is very far from the other numbers in the set
question

median
answer

the middle number in an ordered set of numbers
question

standard deviation
answer

measures showing how much data values deviate from the mean
question

margin of error
answer

helps you find the interval in which the mean of the population is likely to be, it’s based on the size of the sample and the confidence level desired
question

conditional probability
answer

the probability of an event B in relationship to an event A is the probability that even B occurs given that event A has already occurred
question

z score
answer

the number of standard deviations that a value, x, is above or below the mean
question

binomial experiment
answer

experiment that has a fixed number of trials, each trial is independent of the others, only two outcomes, and probability of each outcome remains constant from trial to trial
question

measures of central tendency
answer

the mean, median, mode, and standard deviation of a set of data
question

standard normal curve
answer

a \”bell-shaped\” curve for standard normal distribution
question

mean
answer

the sum of the values in the set divided by the number of items in the set
question

range of a data set
answer

the difference between the highest and lowest values in the set
question

mode
answer

the value or values that occur most often in a set
question

confidence level
answer

the percentage of all possible samples that can be expected to include the true population parameter

Get instant access to
all materials

Become a Member