MTIV Final Exam Vocabulary Review

maximum minus minimum

sampling method in which we sort into similar groups and then choose a sample from each group

subjects respond to the idea of treatment rather than the treatment itself

scientific study in which the researcher imposes the treatment

The numbers that describe the sample are called

__variables classify an individual into one of several groups such as political party

an unusual value in a list of numbers

correlation coefficient

two numbers which separate the middle 50% from the bottom 25% and the top 25% of a list

dummy treatment which does not contain active ingredient

standardized score

diagram which keeps track of overlapping categories

sampling method in which we choose whoever happens to be handy

the dependent variable on the y-axis

the calculation we perform to find the line of best fit for a two-variable data set

an ordered arrangement of objects or people

According to the Empirical rule, _% of data values are within two std. dev. of the mean

the shape of a distribution in which the top and bottom halves are approximate mirror images

sampling method in which respondents choose themselves

The branch of mathematics in which we deal with data is called

the most frequently occurring number in a list

Graphs that display categorical data

n factorial

__ variables take numerical values, such as height, age, and final exam score.

formula which finds the probability of a certain number of successes in a set number of trials

the middle number when measurements are ordered smallest to largest

a game of chance such that the mean is zero, so the player would break even in the long run

diagram which shows sequences of repeated events

measures typical spread above and below the mean

population mean

Graph which displays five-number-summary

sample size

a grouping in which the order does not matter

another name for z-score, used to describe an individual's position relative to the mean

population standard deviation

the mean of a random variable

A graph that displays the relationship between TWO quantitative variables

the shape when the bottom half extends further from the median than the top half

sampling method which uses a pattern

neither the subjects nor those evaluating the experiment know who has the real treatment

the independent variable on the x-axis

Graph which shows every data value as points on a number line

The branch of math in which we study the laws of chance is called

the _ Counting Principle is also known as the Multiplication Rule for Counting

every group of the desired size has an equal chance of being the chosen sample

describes the strength and direction of the relationship between two variables

According to the Empirical rule, _% of data values are within one std. dev. of the mean

Graph which displays the frequency table

The numbers that describe the population are called

sample standard deviation

sample mean

The __ tells us the approx. percentage of data values within 1, 2, and 3 std. dev. of the mean

an attempt to measure the entire population

According to the Empirical rule, _% of data values are within three std. dev. of the mean

the measure of center calculated by dividing the sum by the number of measurements

study in which a comparison is made but the researcher does not attempt to influence results