Explanation

Measures of variability show how much the scores differ or spread out within a group.

They help understand the diversity or consistency of the data.

Explanation

Evaluation involves collecting and analyzing information to assess progress.

It helps in making informed educational decisions to improve learning outcomes.

Explanation

In the sentence "He is a noisy boy in the class":

"Noisy" is an adjective describing the noun "boy" (specifying a trait).

"He": Pronoun (subject).

"Boy"/"Class": Nouns.

Explanation

x²y and xy² have the same variables but with different exponents, so they are not like terms.

Unlike terms cannot be combined through addition or subtraction.

Explanation

The word "renal" specifically relates to the kidneys and their functions.

Terms like renal failure or renal artery all refer to kidney-related conditions or structures.

Explanation

"At the front door" begins with the preposition "at" and shows location related to "light."

It functions as a prepositional phrase modifying the noun "light."

Explanation

Explanation

"Death" is singular, so the verb should be singular: "keeps".

The phrase means death does not follow any calendar or schedule.

Explanation

The prefix "bi-" means two.

Examples include bicycle (two wheels) and bimonthly (twice a month or every two months).

Explanation

Intellect means دانش