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Bimodal distribution

First quartile

Interquartile Range

Lower inner fence

A distribution that has two modes

The value in a ranked data set such that about 25% of the meas…

The difference between the third and the first quartiles

A value in a data set that is 1.5(IQR) below the first quartile

Response Variable

Explanatory Variable

Scatterplot

Positive Association

measures an outcome of a study

may help explain or predict changes in a response variable

shows the relationship between two quantitative variables meas…

data points that generally go upward from left to right, somew…

Response variable

Explanatory variable

Scatterplots

When the variables aren't dependent, th…

Measures the outcome of a study, dependent variable, y

Attempts to explain observed outcomes, indepdent variable, x

Show the relationship betweeen two quantitive variables (bivar…

Independent, x

Procedure with 2 variable statistics

Response variable

Explanatory variable

Specific values of variables

1.) Plot data and calculate numerical summaries... 2.) Look for o…

Measures an outcome of a study

May help explain or influence changes in a response variable

It is easiest to identify explanatory and response variables w…

bimodal

boxplot

Chebyshev's Theorem

co-efficient of variation

a data set with 2 modes

a graph used to represent a data set when the data set contain…

theorem stating that the proportion of values from a data set…

standard deviation divided by the mean with the result express…

Statistic

Parameter

Mean

The Sample Mean

A characteristic or measure obtained by using the data values…

A characteristic or measure obtained by using all the data val…

The sum of the values, divided by the total number of values.

Denoted by x̄ (pronounced X-bar) is calculated by using sample…

Response Variable

Explanatory Variable

scatterplot

Interpreting scatterplots

measure the outcome of a study.

may help explain or influence changes in a response variable.

shows the relationship between two quantitative variables meas…

1) the direction ... 2) the form ... 3) the strength of the relation…

bimodal

boxplot

Chebyshev's Theorem

co-efficient of variation

a data set with 2 modes

a graph used to represent a data set when the data set contain…

theorem stating that the proportion of values from a data set…

standard deviation divided by the mean with the result express…

Distribution

Histogram

Gap

Stem-and-leaf display

Slices up all the possible values of the variable into equal-w…

a type of bar graph that shows the frequency of data within gi…

a region of the distribution where there are no values.

shows quantitative data values in a way that sketches the dist…

Response Variable

Explanatory Variable

Scatterplot

Positive Association

Measures an outcome of a study

Helps explain or influences changes in a response variable

A graphed cluster of points each of which represents the value…

Data points that generally go upward from left to right, somew…

3 Things you should always do first wit…

Relative Frequency Table (distribution…

Distribution of a variable

Area Principle

1. Make a picture- a display to help you THINK... 2. Picture- SHO…

Lists the categories in a categorical variable and the percent…

Tells us what values a variable takes and how often

Each data value should be represented by the same amount of area

3.1 Measures of Central Tendency: Mean

3.1 Measures of Central Tendency: Median

3.1 Measures of Central Tendency: Mode

3.1 Measures of Central Tendency: Resis…

- The average.... - Used when data are quantitative and the frequ…

- The data value "in the middle"... - Used when the data are quan…

- The most frequently occurring value... - Can be applied to both…

Resistant statistic is a numerical summary (statistic or param…

bimodal

boxplot

Chebyshev's Theorem

co-efficient of variation

a data set with 2 modes

a graph used to represent a data set when the data set contain…

theorem stating that the proportion of values from a data set…

standard deviation divided by the mean with the result express…

frequency distribution

Comparative bar chart

pie chart

Segmented bar chart

A table that displays frequencies and sometimes relative and c…

two or more bar charts that use the same set of horizontal and…

a graph of a frequency distribution for a categorical data set.

A graph of a frequency distribution for a categorical data set…

Central tendecny

Median

Mode

Open-ended distribution

Is a statistical measure that attempts to determine the single…

If the scores in a distribution are listed in order from small…

In a frequency distribution, the m_____ is the score or catego…

A distribution is said to be open- minded when there is no upp…

Average daily inpatient census

Calculation of inpatients service days

Calculation of transfers

Census day

The mean number of hospital inpatients present in the hospital…

The measurement of the services received by all inpatients in…

A medical care unit that shows transfers on and off the unit a…

A unit of measure equivalent to the services received by one i…

Scatterplot

Explanatory Variable

Response Variable

Direction

Shows the relationship between 2 quantitative variables measur…

Help explain or influence changes in a response variable. The…

Measures an outcome of a study. The x-axis.

Positive, negative or no direction.

central tendency

mean / average

weighted mean

outliers

a single value used to describe the center point of a data set

most common measure of central tendency... calculated by adding a…

allows you to assign more weight to certain values and less we…

values that are much higher or lower than most of your data

Probability Experiment

Outcome

Sample Space

Event

An action, or trial, through which specific results (counts, m…

The result of a single trial in a probability experiment.

The set of all possible outcomes of a probability experiment {}

Consists of 1+ outcomes and is a subset of the sample space.

Statistical tools to make sense of a la…

Statistical measures that define the ce…

Mean

Deviation

Centrality: data values cluster around one central value which…

Arithmetic Mean... Median... Mode

Suppose there are n observations in a data set consisting of t…

Given a point A and a data point x, then (x- A) represents how…

bimodal distribution

box-and-whisker plot

Chebyshev's theorem

Coefficient of variation

a distribution that has two modes

a plot that shows the center, spread, and skewness of a data s…

for any number k greater than 1, at least (1 - k^2) of the val…

a measure of relative variability that expresses standard devi…

Variance

Sample Variance

Standard Deviation

Z-Score

Measure of how far values in a set of data are from the mean

Summation of the differences of all values and the mean square…

a quantity calculated to indicate the extent of deviation for…

A value minus the mean, divided by the standard deviation.