« previous next »

Author Question: Holding a variable constant is a technique for removing one threat to ____ but it can limit the ____ ... (Read 195 times)

ap345

  • Hero Member
  • *****
  • Posts: 537
on: Jun 19, 2018
Holding a variable constant is a technique for removing one threat to ____ but it can limit the ____ of an experiment.
 
  a. internal validity; external validity
  b. external validity; internal validity
  c. internal validity; reliability
 d. external validity; reliability

Question 2

In sampling notation, N refers to the ____.
 
  a. number of cases in the sampling frame
  b. number of cases in the sample
 c. number of possible subsets
 d. sampling fraction


huda

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jun 19, 2018
Answer to Question 1

a

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

An example of a homeostatically controlled variable: blood levels of glucose in a human. An example of a homeostatically controlled variable: blood levels of glucose in a human.
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Applying and Removing Nonsterile Gloves Applying and Removing Nonsterile Gloves
Effleurage to pectoral muscles using fist. Lift the arm, holding just below the wrist. Apply ... Effleurage to pectoral muscles using fist. Lift the arm, holding just below the wrist. Apply ...
RESEARCH TECHNIQUE RESEARCH TECHNIQUE
Variable penetrance of mitochondrial mutations Variable penetrance of mitochondrial mutations
Video: Glomerubular filtrate rate -pressures that affect GFR and net filtration pressure

For a complete list of videos, visit our video library