Review for Vocabulary Test

The number of data entries in a class

A count or measure of an entire population

Consists of one or more outcomes and a subset of the sample space

A data set is a measure of variation that gives the range of the middle 50% of the data

A probability experiment where the results are reduced to only success and failure and the trials are repeated for fixed

The number of outcomes in the sample space is known and each outcome is equally likely to occur

The upper case Greek letter that denotes the sum of

Found when each value of x is multiplied by its corresponding probability and the products are added

The greatest number that can belong to a class

A technique where the subjects do not how whether they are receiving a treatment or a placebo

The sum of the data entries divided by the number of entries

The number of times a trial is repeated

The value that lies in the middle of the data when the data set is ordered

One in which every member of the population has an equal chance of being selected

Value that is equal to the mean of the random variable

Occurs when an experimenter cannot tell the difference between the effects of different factors on a variable

When two entries occur with the same greatest frequency

Uncountable number of possible outcomes (Decimals and Fractions)

The probability of success in a single trial

When two events, A and B, cannot occur at the same time

A sample in which every possible sample of the same size has the same chance of being selected

When the occurrence of one of the events does affect the probability of the occurrence of the other event

A process of randomly assigning subjects to different treatment groups

Neither the experimenter nor the subjects know if the subjects are receiving a treatment or a placebo

Difference between the maximum and minimum data entry

Based off of educated guesses or intuition

The probability of an event occurring, given that another has already occurred

When the occurrence of one of the events does not affect the probability of the occurrence of the other event

A data entry that is far removed from the other entries in the data set

Occurs in an experiment when subjects change their behavior simply because they know they are participating in an exp.

Each number is separated into a stem and leaf

X represents a numerical value associated with each outcome of a probability experiment

A value that represents a typical, or central, entry of a data set

The numbers that separate classes without forming gaps between them

The upper case Greek letter that denotes the sum of

Each data entry is plotted, using a point, above a horizontal axis

Divide an ordered data set into four equal parts

The difference between the results of a sample and those of a population.

An action, or trial, through which specific results are obtained

A class is the sum of the lower and upper limits of the class divided by two

Discrete probability distribution that is used over specific time, area, or volume

A class is the sum of the frequencies of that class and all previous classes

When two events, A and B, can occur at the same time

Difference between the maximum and minimum data entry

A distribution that is negatively skewed and the tail extends to the left

The probability of failure in a single trial

The least number that can belong to a class

When a vertical line can be drawn down the middle of the graph of the distribution and the resulting halves are approx

Occurs when a subject reacts favorably to a placebo when in fact the subject has been given no medicated treatment atall

Numbers that partition, or divide, an ordered data set into equal parts

Set of all possible outcomes of a probability experiment

The repetition of an experiment under the same or similar conditions

Consist of information coming from observations, counts, measurements, or responses

Represents a count of the number of successful trials

Countable number of possible outcomes (Whole #’s)

When all entries, or classes, in the distribution have equal or approximately equal frequencies

The square root of the sum of the product of the probability of x and the x minus the mean squared

A count or measure of part of a population

The result of a single trial

Discrete probability distribution that is used when looking for the 1st success

The science of collecting, organizing, analyzing, and interpreting data in order to make decisions

Lists each possible value the random variable can assume, together with its probability

A table that shows classes or intervals of data entries with a count of the number of entries in each class

The data entry that occurs with the greatest frequency

A distribution that is positively skewed and the tail extends to the right

The sum of the product of the probability of x and the x minus the mean squared

A circle that is divided into parts to interpret a whole

The number of subjects in an experiment

A vertical bar graph in which the height of each bar represents frequency or relative frequency

The frequency of outcomes in the sample space is estimated from experimentation

An event that consists of a single outcome

The distance between lower (or upper) limits of consecutive classes

When repeated over and over, the empirical probability approaches the actual probability

The set of all outcomes in a sample space that are not included in E

A class is the portion or percentage of the data that falls in that class and is the f of the class divided by total