BY: Nyshad Thatikonda Alex Tran Miguel Suarez

How to use this power point 1) Click on the box with the number. Best to click on the black part and not the number directly. 2) 100 = easy 500= hardstar= hardest question 3) When the question appears on the screen answer it. 4) Then click in the same page and the right answers should appear. 5) When done, hit the home button on the bottom of the screen to go back to the main page 6) If you are done answering all the questions and want to redo them later, escape out of the slide show and restart it so the answers can’t be seen right away. 7) Hope this helps to review for the AP Exam and good luck!

A dummy treatment that has the same appearance as the original. It is usually a pill. Placebo

Neither the subjects nor the people who have contact with them know which treatment a subject received. Double-blind experiment

Imposes some treatment on individuals in order to observe their responses. Experiment

Observes individuals and measures variables of interest but does not attempt to influence the responses. Observational Study

Entire group of individuals that we want information about. Population

A part of the population that we actually examine in order to gather information. Sample

Only the subjects don’t know which treatment they received. Single-blind experiment

Occurs if the subject favors the placebo and responds to the dummy treatment. Placebo effect

The observations are matched in pairs from the same group. Matched pairs design

Attempts to contact every individual in the entire population. Census

Experimental units called if they are humans Subjects

Occurs when an individual chosen for the sample can’t be contacted or does not cooperate. Nonresponse

Happens if the design of a study is systematically favors certain outcomes. Bias

The effects of lurking variables on the response, most simply by comparing two or more treatments. Control

A sample chosen by chance. Probability Sample

Occurs if the question is asked about illegal or unpopular behavior. Response bias

Occurs when some groups in the population are left out of the process of choosing the sample. Undercoverage

A specific experimental condition applied to the units. Treatment

Occurs when sample members are self-selected volunteers Voluntary response bias

Explanatory variables in an experiment. Factors

A way to have an equal chance for an individual to be chosen, to avoid bias. Simple random Sample (SRS)

The random assignment of units to treatments is carried out separately within each block. Block design

Provides an alternative method for producing data in circumstances such as when it is logistically difficult or simply inconvenient to obtain a sample or to impose a treatment. Simulation

The size of the groups and which treatment they receive, and the response variable are all present. Randomized comparative experiments

First divide the population into groups of similar individuals. Then choose a separate SRS in each stratum and combine these SRS to form the full sample. Stratified random sample

Most important influence on the answers given to a sample survey. Confusing or leading questions can introduce strong bias. Wording of questions