Bias can occur in sampling. bias refers to
Bias can happen in sampling. The propensity of a sample statistic to systematically under- or
over-approximate a population is referred to as bias.
To add, in statistics, sampling bias is a bias in which a sample is collected in such a way that some members of the intended population are less likely to be included than others.
The following are some types of biases in Statistics:
Selection bias includes individuals being more likely to be chosen for study than others, biasing the sample. This can also be termed Berksonian bias
In statistical hypothesis testing, a test is said to be unbiased if for some alpha level (between 0 and 1), the probability the null is not accepted is less than or equal to the alpha level for the entire parameter space defined by the null hypothesis, while the probability the null is rejected is greater than or equal to the alpha level for the entire criterion space interpreted by the alternate hypothesis.
Bias in sampling refers to any tendency that prevents unprejudiced consideration of a question. In the context of surveys and sampling, bias can occur due to the wording of questions, the methodology of data collection, or the self-selection of survey respondents. For example, an internet survey might be biased if only certain groups of people choose to respond, or a question in a survey about organic food might elicit biased responses due to its phrasing.
Bias can significantly alter the outcomes of a survey or poll and thus needs to be minimized to ensure more accurate results. For instance, Kenneth Rasinky noted that the use of terms such as "assistance to the poor" instead of "welfare" can cause respondents to indicate stronger support, despite the terms having the same meaning. The selection of respondents (like with internet surveys) can also lead to bias if the sample is not representative of the population. In addition, crafting questions in a survey is crucial as biased questions might lead respondents toward a specific answer, like the flawed example of proving chocolate ice cream's popularity by asking respondents if they simply like the flavor. A more neutral and comprehensive approach in both language and methodology is necessary to reduce bias in surveys.
"what are the two major unix system versions?"
The two major UNIX system versions are the UNIX System V and the AT&T UNIX. UNIX System V is the evolutionary outcome of a developmental project at the AT&T Bell Laboratories. BSD UNIX is a subsidiary version, which began with an early spread of AT&T UNIX by computer science students at the University of California at Berkeley.
The two major versions of UNIX are BSD, which is known for its fast filesystem and TCP/IP network stack, and System V, which is known for its support for multiple processors and an easier to navigate file system hierarchy.
Explanation:The two major UNIX system versions are BSD (Berkeley Software Distribution) and System V. Both of these versions have influenced the development and evolution of Unix and Linux operating systems over the years.
BSD is derived from the version of UNIX developed at the University of California, Berkeley. It is known for its TCP/IP network stack and the fast filesystem. It has further evolved into systems like FreeBSD, OpenBSD, and NetBSD.
On the other hand, System V is derived from the version of UNIX that was developed by AT&T. This version introduced features like support for multiple processors and a file system hierarchy that was easier to navigate. It has influenced the creation of modern Unix systems like AIX, HP-UX, and Solaris.
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When a person removes co2 from the lungs by exhaling, the person also removes __________ from the blood?
When a person removes CO2 from the lungs by exhaling, they also remove carbon dioxide from the blood.
Explanation:When a person removes CO2 from the lungs by exhaling, they also remove carbon dioxide from the blood. Carbon dioxide is transported in the blood from body tissues to the lungs by several methods, including dissolution directly into the blood, binding to hemoglobin, or being carried as a bicarbonate ion. When the blood reaches the lungs, the dissolved carbon dioxide diffuses across the respiratory membrane into the alveoli, where it is then exhaled during pulmonary ventilation.
Which animal would display a j-shaped curve for its rate of oxygen consumption relative to its speed? sockeye salmon ground squirrel kangaroo bird?
what are the main purposes of mitosis? list the main reason why an organisms cells would undergo this process
An animal with a rigid backbone would belong to which phylum?
In William Blake's poem "The Chimney Sweeper," the metaphor "coffins of black" represents___.
A. Innocence
B. Chimneys
C. Daffodils
D. The Tiger
Which of the following is a true difference between prokaryotic and eukaryotic cells?
A. Eukaryotic cells are smaller
B. Eukaryotic cells are more ancient
C. Eukaryotic cells are less complex
D. Eukaryotic cells have true nuclei
Which of the following organs is not part of the alimentary canal?
The alimentary canal includes the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. Accessory organs like the teeth, tongue, salivary glands, liver, pancreas, and gallbladder, while vital to digestion, are not part of the alimentary canal.
Explanation:The organs that make up the alimentary canal include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. On the other hand, accessory structures or accessory digestive organs, which aid in the breakdown of food but are not part of the alimentary canal, include the teeth, tongue, salivary glands, liver, pancreas, and gallbladder. Therefore, the following organs are not part of the alimentary canal: teeth, tongue, salivary glands, liver, pancreas, and gallbladder.
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Indicate what develops when abnormal cells divide and create other abnormal cells:
Hemoglobin is a protein in red blood cells that binds to oxygen. which physiological changes that naturally occur in the body reduce hemoglobin\'s affinity for oxygen?
Hemoglobin's affinity for oxygen decreases with higher carbon dioxide levels and lower blood pH, higher body temperatures, and in conditions like sickle cell anemia and thalassemia, which alter the red blood cells' structure or hemoglobin content.
Explanation:Hemoglobin's affinity for oxygen can be reduced by several physiological changes in the body. High levels of carbon dioxide (CO2) lead to increased production of hydrogen ions, which decreases blood pH. This condition, known as acidosis, causes oxygen to dissociate more readily from hemoglobin, shifting the oxygen dissociation curve to the right. Similarly, an increase in body temperature, often a result of increased muscular activity, also reduces hemoglobin's affinity for oxygen. Certain diseases, such as sickle cell anemia and thalassemia, negatively affect red blood cells' shape or hemoglobin levels, thereby reducing their oxygen-carrying capacity.
How does ATP supply energy for cellular activities?
What advantage do you think a protist would gain by having a unicellular, filamentous, or colonial form?
Final answer:
Protists can gain advantages such as efficient nutrient absorption, attachment to substrates, and division of labor by having different forms like unicellular, filamentous, or colonial.
Explanation:
A protist can gain several advantages by having different forms such as unicellular, filamentous, or colonial.
Unicellular protists have a higher surface area to volume ratio, which allows for efficient nutrient absorption and waste elimination. They can also reproduce quickly and adapt to changing environmental conditions.
Filamentous protists, like bacteria, can form long chains of cells that enable them to colonize surfaces and attach to substrates. This helps them access resources and form protective barriers.
Colonial protists can benefit from collective behavior and division of labor within the colony. Some cells can specialize in reproduction, while others carry out specific functions like locomotion or feeding.
When a slice of fresh apple turns a brown color, this is most likely the result of ________?
in 1986 several robotic spacecrafts were sent into space to study the halleys comet. Which of these statements best explains why humans should continue to send robotic spacecrafts into space?
A) they absorb harmful radiations in space
B) they help change weather conditions on earth
C) they help discard some myths about objects in space
D) they destroy meteors and comets which might strike earth
Answer:
C) they help discard some myths about objects in space
Explanation:
This is the only one on this list that would be possible currently.
What is the flaw of biological frameworks for sexuality?
A 43-year-old female presents to the physician for an ulcer of the right ankle. patient also has diabetes mellitus. what icd-10-cm code(s) should be reported?
The icd-10-cm codes that should be reported are 707.13 and 250.00.
To add, in the ICD-9-CM Index to Diseases, look for Ulcer/lower extremity/ankle which refers you to code 707.13. Under subcategory code 707.1, there is a note: Code, if applicable, any casual condition first. The scenario does not have a causal relationship between the ulcer and diabetes (example, ulcer due to the diabetes). The two codes will be coded separately. The code for a diabetic manifestation is not reported because there is no causal relationship. Look in the Index to Diseases for Diabetes, diabetic 250.0x. In the Tabular List, a fifth digit of 0 is selected for diabetes with no mention of complication.
for what reasons would a eukaryotic cell evolve an endoplasmic reticulum and a golgi apparatus?
The domain containing all organisms with eukaryotic cells is the Domain Eukarya. There are only three domains; the Archaea, Bacteria and Eukarya. Domain Eukarya came from the first prokaryotic cells billions of years ago. In the cytoplasm, ribsomal RNA (rRNA), a type of RNA, and protein combine to form a nucleoprotein called a ribosome. The ribosome serves as the site and carries the enzymes necessary for protein synthesis. They are often takes the shape of small round particles attached in the endoplasmic reticulum. The ribosome attaches itself to m-RNA and provides the stabilizing structure to hold all substances in position as the protein is synthesized. Several ribosomes may be attached to a single RNA at any time
Why are antimicrobial drugs of limited usefulness in bacillus anthracis infections?
Name the functional group that links two monosaccharides in a disaccharide
A glycosidic bond is the functional group that links two monosaccharides in a disaccharide. This bond is formed through a dehydration synthesis reaction between two monosaccharides. Examples of substances formed this way include sucrose, lactose, and maltose.
Explanation:The functional group that links two monosaccharides in a disaccharide is called a glycosidic bond. This bond is formed when two monosaccharides undergo a dehydration synthesis or dehydration reaction. During this reaction, the hydroxyl group of one monosaccharide combines with a hydrogen atom of another monosaccharide. This process releases a water molecule and forms a covalent bond known as a glycosidic bond, linking the two sugar molecules. Important examples of disaccharides include sucrose, lactose, and maltose, each consisting of specific monosaccharides linked through glycosidic bonds.
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Is a fat replacer used in food processing that can bind to fat-soluble vitamins and thereby reduce their absorption?
Sleep reactivates recent experiences stored in the ________ and shifts them for permanent storage in the cortex.
Roughly speaking, patent law covers __________ and __________ law protects an author's original books.
Patent law covers inventions and copyright protects books, songs, and art. Trade secrets are also a form of intellectual property protection.
Explanation:Roughly speaking, patent law covers inventions and copyright protects books, songs, and art. In certain areas, like the invention of new software, it has been unclear whether patent or copyright protection should apply. There is also a body of law known as trade secrets. Even if a company does not have a patent on an invention, competing firms are not allowed to steal their secrets. One famous trade secret is the formula for Coca-Cola, which is not protected under copyright or patent law, but is simply kept secret by the company.
The ________ of exercise determines whether carbohydrates or fat is the predominant source of energy production
Exercise intensity dictates whether the body uses carbohydrates or fat as its main energy source, with low-intensity exercise favoring fat and high-intensity exercise favoring carbohydrates due to the aerobic and anaerobic metabolic pathways involved.
The exercise intensity determines whether carbohydrates or fat is the predominant source of energy production. During low-intensity activities, the body primarily uses aerobic metabolism, which is efficient at producing large amounts of ATP, and fat is the primary energy source. For high-intensity activities, where more ATP is needed quickly, the muscles rely on both anaerobic and aerobic metabolism, with carbohydrates being consumed more rapidly for immediate energy.
Fatty acids are favored during low-intensity exercise due to their abundant storage in the body, while glucose is primarily used during high-intensity activity, which relies more on anaerobic metabolism due to the limited oxygen available. However, the body's glycogen stores (from which glucose is derived) can be depleted, leading to fatigue.
It's important to note that even though fat reserves provide a more substantial energy source for prolonged exercise, carbohydrates are still utilized and are essential for shorter, more explosive movements where quick energy is necessary.
Which preservative has been found to be potentially carcinogenic in animals?
The answer to this question is nitrates. Nitrate is a compound that is composed of nitrogen and oxygen. Nitrates are used as a preservatives in food, can be used as fertilizer, an ingredient to make gunpowder, and also an ingredient in making explosives or bomb.
If a dihybrid F1 plant is self fertilized, what proportion of progeny will have the same phenotype as the F1 parent? What proportion will be true-breeding? What proportion will be heterozygous at one or both loci?
How can the order of three linked genes (a, b, and
c.on the same chromosome be determined?
The endocrine system consists of a series of glands that produce chemical substances known as ________.
The endocrine system is made up of glands that produce hormones, which are chemical substances that regulate various functions in the body. These hormones are secreted into the bloodstream and affect cells that have receptors for them, resulting in widespread and long lasting effects. Major endocrine glands include the adrenal glands, thyroid, pituitary, and others.
Explanation:The endocrine system consists of a series of glands that produce chemical substances known as hormones. These glands include the adrenal glands, which produce hormones such as epinephrine and norepinephrine that regulate responses to stress, and the thyroid gland, which produces thyroid hormones that regulate metabolic rates. Hormones are released into body fluids, usually blood, which carries them to their target cells where they elicit a response.
The endocrine glands secrete hormones into the surrounding interstitial fluid; those hormones then diffuse into the blood and are carried to various organs and tissues within the body. The endocrine glands include the pituitary, thyroid, parathyroid, adrenal glands, gonads, pineal, and pancreas.
In contrast to neurotransmitters, hormones are not released in close proximity to cells with their receptors but are secreted into the bloodstream and travel throughout the body, affecting any cells that contain receptors for them. As a result, while neurotransmitters' effects are localized, the effects of hormones are widespread and slower to take effect but tend to be longer lasting.
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Which of the following is NOT a function of mycorrhizae?
a. assemble amino acids
b. increase water and mineral uptake
c. break down organic materials
d. none of the above
Human beings are somewhat unusual among primates in the length of their life span beyond their productive years. this may have provided an adaptive advantage over the course of evolution and is known as ____.