
The two major types of statistics are ______ statistics and _____ statistics.
Inferential, Descriptive

What is the difference in the conclusion drawn from a designed experiment an observational study?
Oberservational can only reveal association, where designed experiments can show causation

Describe advantages and disadvantages of cluster sampling.
 Advantages: Easier, faster, less expensive
 Disadvantage: cluster sampling is not that accurate, each cluster will probably not be the same as the other clusters

Age Percentage not covered
1824 28.2
2539 24.9
4054 19.1
5565 16.5
Classify the study as either descriptive or inferential
Inferential

Define Observational Study
researchers observe characteristics and take measurements

Define Designed experiment
researchers impose treatments and controls

Descriptive Statistics
consists of methods for organizing and summarizing information

inferential statistics
consists of methods for drawing and measuring the reliability of conclusions about a population based on info obtained from a sample of the population

Contingency table represent what specific kind of discrete data
bivariate data

what is the equation for Chebyshev's Rule
100(1(1/k^{2}) %

How many data points are you trimming off for 20 data points with a 10% trimmed mean?
4 in total...2 on top and 2 on the bottom

Qualitative variable
nonnumerical variable

Quantitative variable
numerical variable

variable
characteristic that varies from one person or thing to another

data
values of a variable

qualitative data
values of a qualitative variable

quantitative data
values of a quantitative variable

discrete variable
quantitative variable whose possible values can be listed

continuous variable
quantitative variable whose possible values form some interval of numbers

a table that provides the classes, frequencies, relative frequencies, and midpoints of a data is called a _______
groupeddata table

A positive Z score indicates that the observation is ______ the mean, whereas a negative Z score indicates that the observation is _____ the mean.
above, below

A standardized variable always has mean ____ and standard deviation ____
0, 1

interpret this z score.
Z = 10.16  3.00 = 2.24
3.20
the data 10.16 is 2.24 standard deviation above the mean of 3.00

difference between a parameter and a statistic
a parameter is a measure of the population and a statistic is a measure of a sample

mutually exclusive events
no two of them have outcomes in common

