"Variance" Pronounce,Meaning And Examples

"Variance" Natural Recordings by Native Speakers

Variance

"Variance" Meaning

Variance refers to the measure of how spread out a set of numbers is from their mean value. It is a statistical concept that calculates the average of the squared differences from the mean, providing an indication of the amount of variation or dispersion present in a dataset. The formula to calculate variance is: Variance Σ(xi - μ)² / (n - 1), where xi represents each individual data point, μ is the mean of the dataset, and n is the total number of data points. In essence, variance helps to understand how consistent or inconsistent a set of data is, with higher variance indicating greater inconsistency and lower variance indicating greater consistency.

"Variance" Examples

Here are 5 usage examples for "variance":

1. Statistics

To calculate the mean, you must first calculate the variance of the dataset, which measures the spread of the values from the mean.

python
import numpy as np
data [1, 2, 3, 4, 5]
mean sum(data) / len(data)
vari [(i - mean) 2 for i in data]
variance sum(vari) / len(vari)

2. Business

The company has experienced a significant variance in quarterly profits over the past year, with some quarters showing significant losses.

python

Example of variance in financial planning

quarter1_profit 100
quarter2_profit -50
quarter3_profit 200
quarter4_profit -150
avgprofit (quarter1profit + quarter2profit + quarter3profit + quarter4_profit) / 4
variance (quarter1profit - avgprofit) 2 + (quarter2profit - avgprofit) 2 + (quarter3profit - avgprofit) 2 + (quarter4profit - avgprofit) 2
print("Variance in profits:", variance)

3. Sports

The coach noticed a significant variance in the running times between the two groups of athletes, suggesting some needed extra training.

python

Example of variance in sports performance data

times_group1 [10, 12, 15, 18]
times_group2 [20, 22, 25, 28]
group1avg sum(timesgroup1) / len(times_group1)
group2avg sum(timesgroup2) / len(times_group2)
variance1 sum([(i - group1avg) 2 for i in timesgroup1]) / len(times_group1)
variance2 sum([(i - group2avg) 2 for i in timesgroup2]) / len(times_group2)

4. Education

The curriculum developer aimed to minimize variance in student learning outcomes, ensuring all students met the expected standards.

python

Example of variance in academic achievement

standard_score 80
scores_student1 [90, 92, 88]
scores_student2 [70, 72, 68]
variance1 sum([(score - standardscore) 2 for score in scoresstudent1]) / len

"Variance" Similar Words

Vardenafil

Vardenafil is a medication used to treat erectile dysfunction (ED). It belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. Vardenafil works by increasing blood flow to the penis to help a man get and keep an erection. It is available under the brand name Levitra and is often prescribed by doctors to help men with ED.

Varenicline

Varenicline is a medication used to treat nicotine addiction. It is a partial agonist at the α4β2 subunit of the nicotinic acetylcholine receptor, and acts as a nicotinic receptor partial agonist. This means it binds to the receptor and activates it, but to a lesser extent than the full agonist, nicotine. By doing this, it reduces the pleasure that nicotine normally provides to the brain when smoked, and reduces the craving for nicotine.

Varese

Variability

Variable

Variableness

The word "variableness" refers to the state or quality of being unpredictable or changeable; the degree to which something varies or can vary, especially in terms of quantity or quality. It describes the characteristic of being subject to change, fluctuation, or uncertainty.

Variables

Variably

Tending to vary; capable of varying; having different forms or appearances according to the circumstances: occasionally or in an inconsistent manner.

Variances

The word "variances" refers to differences or differences in quantity or quality between things. It can also refer to the amount or degree of difference. In a mathematical sense, variances can refer to the mean squared difference between each observation and the mean in a data set. In statistics, variance is a measure of how spread out the data is from the mean value. In a broader sense, variances can also refer to discrepancies or inconsistencies, such as variances in opinions, attitudes, or behaviors.

Variant

Variate

A mathematical term. To vary (something), especially a quantity or quality, by a degree or amount. Example: The variable speed limit will vary depending on road conditions. It can also mean: To change or make different (something) in order to introduce change or interest A book in which the reading matter is arranged in a different order in different copies of the book (e.g. a patchwork quilt). In mathematics, a variate is a value or quantity that changes according to a set of rules.

Variates

Variation

Variation refers to a difference in form, amount, or degree, especially in something such as a product, process, or activity. It can also refer to a change in the way something occurs or is done. In general, variation can be seen in many aspects of life, including: Biological variation: differences among individuals within a species Physical variation: differences in the physical characteristics of a product or system Cultural variation: differences in customs, behaviors, or practices among different groups Linguistic variation: differences in language usage, accent, or dialect Geographical variation: differences in climate, geography, or landforms in different regions Variation can be good or bad, depending on the context. For example, in genetics, genetic variation can lead to evolution and adaptation, but in some cases, it can lead to genetic disorders. In music, variation can add richness and interest to a composition, while in manufacturing, variation can lead to defects and inconsistencies. In scientific research, variation is a key concept in statistical analysis, as it helps to identify patterns, trends, and relationships between variables.

Variational

Variable and variable in size or amount.

Variationist

Variations

Variations refer to differences or changes in something, often in terms of degree, form, or character. It can be a deviation or modification from a standard, norm, or original.