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3 years ago

How is the median defined if the number of observations is even?

2 answers:

5 0

The answer is A.
In getting the median if there's an even number of observations, first, you need to arrange the data from least to greatest (or greatest to least will do).
Then, add the two middle observations, then divide the answer by 2, to get the average of the two middle observations. The answer you will get from dividing it by two is the median.

sveta [45]3 years ago

3 0

If the number of observations is even, then the median is defined as the average of the two middle observations<span>. Median is a measure of central tendency, it depicts the middle value in a given set of numbers. To find the median, the data should be arranged in order from least to greatest. If there is an even number of items in the data set, then the median is found by taking the mean or average of the middlemost numbers. If there is an odd number of results or items, the median is the middle number.</span>

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The smallest portion of the human brain is the cerebrum. true or false

Savatey [412]

That's false, it's the pons :)

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3 years ago

Plant hormones act by directly affecting the activities of _____. genes enzymes signal transduction pathways genes and enzymes m

Readme [11.4K]

Answer:

Signal transduction pathways

Explanation:

Plant hormones act by directly affecting the activities of signal transduction pathways.

Signal transduction pathways are involved in the transfer of signals from outside of the cell to the inside of the cell for the regulation of various cellular activities. For this, the extracellular signalling molecules bind to the receptors that are located on the cell membrane. After their binding due to some change in the receptor molecule, a signal is triggered in to the cell and thus information from outside of the cell is transferred to the inside of the cell through these transduction pathways.

Plant hormones affect these pathways and as a result membranes, enzymes, and genes are also influenced by the plant hormones.

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3 years ago

The earth's core and atmosphere cool down and brought about the_

grin007 [14]

Answer:

Explanation:

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7 0

3 years ago

In fruit flies, curved wings (w) are recessive to the dominant straight wings (W), and ebony body (b) is recessive to the domina

lara [203]

Answer:

The correct answer =

parents : WwBb x wwbb

offspring :

WwBb, Wwbb, wwBb, and wwbb

Explanation:

It is given that the straight wings (W) is dominant over curved wings (w) and the ebony body (b) is recessive to the dominant gray body (B) and there is a cross between curved wings and ebony body and straight wings and gray body is made. The phenotypic ratio is: 1:1:1:1 for the four different phenotypes straight gray, straight ebony, curved gray, curved ebony.

It is not given the genotype of parents, however, for the curved and ebony fly, it is clear that both alleles are recessive as recessive alleles only appear in absence of the dominant allele of the trait.

For another parent, the possible genotypes can be WWBB or WwBb, however in the case of WWBB the phenotypic ratio would not be equal therefore,

crossing WwBb x wwbb

This can be represented in the form of a punnett square as below:

wb wb wb wb

WB WwBb WwBb WwBb WwBb Straight wing, Gray body

Wb Wwbb Wwbb Wwbb Wwbb Straight wing, Ebony body

wB wwBb wwBb wwBb wwBb Curved wing, Gray body

wb wwbb wwbb wwbb wwbb Curved wing, Ebony Body

The phenotypic ratio is: 1:1:1:1 for the four different phenotypes

4 0

3 years ago

Natural selection can lead to formation of a new species which is called?

Inessa [10]

Would this be speciation?

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3 years ago