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Debora [2.8K]
3 years ago
6

When a researcher assigns participants to either an experimental or a control group based on their last names, systematic differ

ences between groups are created before the experiment even begins. This is a confounding variable referred to as _____
Social Studies
1 answer:
Lisa [10]3 years ago
7 0

Answer: Selection bias

Explanation:

Selection bias is defined as the process in which individual or group of individual are analyzed for selection process by lacking randomization property .This process displays that selected sample of individuals is not similar representative of major interest population.

According to the question,the systematic difference that occurs in selected group for experiment as per their last name is  displaying that selected group does not represent interest population that is causing systematic error.Thus, this situation describes about selection biasing.

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What is the predominant vegetation zone in northern part of Africa around the Tropic of Cancer?
nordsb [41]

1. What is the predominant vegetation zone in northern part of Africa around the Tropic of Cancer?

The Tropic of Cancer is a parallel located in the Northern Hemisphere, it crosses Africa to the north in all its extension, in the area of ​​the well-known Sahara Desert.

The Sahara desert or Sahara (a name that means in Arab "the Great Desert") is the most extensive warm desert of the world. Its flora and fauna have adapted to extreme weather conditions.

<u>The central Sahara has a very small number of species</u> that have managed to adapt to survival in the desert. Among these plants, we can mention: acacias, palms, succulents, bushes, and different grasses have adapted to the arid conditions, in addition to cactus. All are small in size to concentrate water. Another characteristic of these species is their capacity for regeneration. The leaves can become completely dry and recover.

2.  What is similar about Vegetation zones surrounding the Democratic Republic of the Congo in Africa and central part of Brazil?

Congo and central Brazil are both are tropical regions.

The tropical region´s on the Earth a<em>re located between the Tropic of Cancer and the Tropic of Capricorn</em>. The tropical zones are characterized because they have abundant vegetation.

The characteristics:  

  • Regular rains
  • Short thermic amplitude
  • Warm Climates
  • A lot of humidity.
3 0
3 years ago
Samantha, who is trying to lose 25 pounds, found that she is able to maintain her diet when she eats alone. However, when she ea
Bas_tet [7]

Answer:

Social Facilitation

Explanation:

Social facilitation refers to a situation when a person perform better in doing a certain job/task when other people are around to witness the performance.

Typically, this can be explained by people's desire to maintain positive social status. When other people see your performance you tend to put more effort in order to impress other people in your social group.

In the example above, We know that Samantha has an easier in controlling her diet when she's alone.

But when she's eating with her friends, she experience a certain form of social pressure that make her want to maintain a certain social status. If for example, all her friends are eating a certain type of foods or drinks, she might feel afraid that her friends will consider her to be rude or weird if she's not doing the same.

3 0
3 years ago
What is the difference between a duty and a responsibility?
laila [671]

Answer:

A duty is a task which is expected to be completed. A responsibility is doing a task part of a role or position.

Explanation:

7 0
3 years ago
Which excerpt from The Great Fire supports the theme that people sometimes disregard others in chaotic situations?
lyudmila [28]

The answer to your question is A. "Others weren't so lucky. In the rush and panic, a number of people either lost their footing or were accidentally pushed from the sidewalk and into the busy street."

5 0
3 years ago
Read 2 more answers
Anong uri ng kontemporaryong isyu ang sa tingin mo ay dapat pagtuonan ng pansin ng ating pamahalaan? Bakit?
kondaur [170]

Answer:

please I don't understand your language

7 0
2 years ago
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