Experimental Design

Experimental Design

12th Grade

15 Qs

quiz-placeholder

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Experimental Design

Experimental Design

Assessment

Quiz

Mathematics

12th Grade

Practice Problem

Hard

Created by

Anthony Clark

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Steve wanted to see if different types of fertilizer influence sunflower growth. What is the explanatory variable?

type of fertilizer

sunflower grown without fertilizer

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The response variable is the _____.

Diameter of the ball

Force acting on the ball

Height that the ball bounces

Height from which the ball is dropped

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Can pleasant aromas help a student learn better? Two researchers believed that the presence of a floral scent could improve a person's learning ability in certain situations. They had 22 people work through a pencil-and-paper maze 6 times. Three of the times they wore a floral-scented mask and three times they wore an unscented mask. The three trials for each mask followed one another. Testers measures the length of time it took subjects to complete each of the six trials. They reported that, on average, subjects wearing the floral-scented mask completed the maze more quickly that those wearing the unscented mask, although, the difference was not statistically significant. This study is:

convenience sample

oberservational study

experiment, but not double-blind

double-blind experiment

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Four groups of randomly selected people are assigned a different diet. After six months, the blood pressures of each group are compared.

Observational Study

Experiment

5.

MATCH QUESTION

1 min • 5 pts

Match the following

Matched Pairs Design

Treatments are assigned completely at random within each block.

Single-Blind Study

Subjects do not know which treatment they are receiving, but members of the research team do, or vice versa.

Completely Randomized Design

Treatments are assigned to experimental units

completely at random.

Double-Blind Study

A special case of a randomized block design. Using a blocking variable, subjects (whether they are people or not) are arranged in pairs matched on relevant factors.

Randomized Complete Block Design

Neither the subjects nor the members of the research team who interact with them know which

treatment a subject is receiving.

6.

MATCH QUESTION

1 min • 5 pts

Match the following:

Population

A collection of experimental

units either not given a treatment of interest or

given a treatment with an inactive substance

Treatment

The complete set group of individuals

Experimental Unit

A treatment with an inactive substance

Control

The individuals

(which may be people or other objects of

study) that are assigned treatments.

Placebo

Different conditions

assigned to experimental units.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The tablecloths washed without bleach is the _____ group

independent variable

Dependent variable

Experimental group

Control Group

Constants

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