What is Standard Deviation? Standard Deviation (SD) is the statistical measure of how spread out the values of a data set are from the mean or average number. In short, it measures the variation of the values from the mean.Â The closer the values are to the mean, the lesser they are spread out, which also yields to a small …

## Verb Tense Consistency: Maintain or Change?

What is Verb Tense Consistency? Verb tense consistency means sticking to a verb tense for the entire clause, sentence, or paragraph. Do not shift tenses unless necessary and appropriate. Take this sentence with confusing and inconsistent verb tense, for example: Michelle painted her room red, arranges her closet, and will wash the car.Â The verb painted is in the past tense, …

## Verb Tenses: When an Action Occurs

What are Verb Tenses? Aside from expressing what the subject does, verbs essentially show us the time of an action. Verbs specify different time frames through different verb tenses. In short, verb tenses tell when an action occurred. English has three main verb tenses: past, present, and future. The past tense describes an action that happened in the past, for …

## Allusion: Implied or Direct Reference

What is an Allusion? In short, an allusion is a figure of speech that references a famous person, place, event, or literary work. Allusions are either implied or direct. If you hear someone say, â€śCupidâ€™s arrow keeps missing me,â€ť he or she alludes to the classic mythology that hails Cupid as the arrow-bearing God of Love. In literature, writers use …

## Area of a Triangle: Formula & Examples

A triangle is three-sided shape with a height thatâ€™s perpendicular to its base. There are different types of triangle, such as scalene, isosceles, and equilateral. The formulas for finding the area and the perimeter of a triangle are the same for all its types. Hereâ€™s an illustration of a showing the formulas for finding the area and perimeter of a …

## Perimeter of a Triangle: Formula & Examples

A triangle is three-sided shape with a height thatâ€™s perpendicular to its base. There are different types of triangle, such as scalene, isosceles, and equilateral. The formulas for finding the area and the perimeter of a triangle are the same for all its types. Hereâ€™s an illustration of a triangle and the formulas for finding its area and perimeter. Want …

## Area of a Square: Formula & Examples

A square is a shape with four equal sides (equilateral) and four equal angles (equiangular). Itâ€™s the only equilateral and equiangular quadrilateral. Hereâ€™s a quick guide to computing the area of a square. How to Compute the Area of a Square The area of a shape refers to the total amount of space enclosed in it. To find the area …

## Perimeter of a Square: Formula & Examples

A square is a shape with four equal sides (equilateral) and four equal angles (equiangular). Itâ€™s the only equilateral and equiangular quadrilateral. Hereâ€™s a quick guide to computing the perimeter of a square. What is the Perimeter of a Square? As previously discussed, perimeter is the total length of a closed shape. To find the perimeter of a square, add …

## Definite and Indefinite Articles: The & A/An

What are Definite and Indefinite Articles? Articles are teensy words that tell if a noun is specific or general. Because they modify nouns, articles are adjectives, too. In fact, they are the most commonly used adjectives. The two articles of the English language are: the and a/an. They are known as definite and indefinite articles. Also called the definite article, the …

## Degrees to Radians: Convert & Calculate

We use different measurement units to determine length (in, m, or km), mass (kg, mg, or g), or temperature (Celsius or Fahrenheit) and Math enables us to convert between these measurement units. In the same way, a circleâ€™s angle can be measured in two ways: with degrees and with radians and using formulas, we can convert between the two. What …