Standard deviation

In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values. A standard deviation close to 0 indicates that the data points tend to be very close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the data points are spread out over a wider range of values.

The standard deviation of a random variable, statistical population, data set, or probability distribution is the square root of its variance. It is algebraically simpler, though in practice less robust, than the average absolute deviation. A useful property of the standard deviation is that, unlike the variance, it is expressed in the same units as the data. There are also other measures of deviation from the norm, including mean absolute deviation, which provide different mathematical properties from standard deviation.

Standard deviation (disambiguation)

Standard deviation is a widely used measure of variability or diversity used in statistics and probability theory.

Standard Deviation(s) may also refer to:

  • "Standard Deviation" (Everybody Loves Raymond), an episode of Everybody Loves Raymond
  • "Standard Deviation", an episode of Eerie, Indiana: The Other Dimension
  • Standard Deviations (album), a 2003 album by the Fullerton College Jazz Band
  • Standard Deviations (exhibition), a 2011-12 exhibition of digital typefaces at the Museum of Modern Art, New York
  • Standard Deviation (Masters of Sex)

    "Standard Deviation" is the third episode of the first season of the American period drama television series Masters of Sex. It originally aired on October 13, 2013 in the United States on Showtime.

    Plot

    In 1945, William Masters (Michael Sheen) shows Barton Scully (Beau Bridges) an experiment he is conducting with rabbits. He then reveals to Scully that he wants to stop studying animal sexuality and move on to humans, claiming that everyone, including Bill himself, is clueless about sex. Time transitions back to February 1957, where an engaged college student (Mae Whitman) is consulting Bill about contraception. Not even aware of where her cervix is, she is clearly uneducated about sex.

    Virginia Johnson (Lizzy Caplan) eagerly tells Bill about the prostitutes from the brothel that have agreed to partake in their study. She is disappointed by Bill treating her like his secretary, when she prefers to be considered his assistant. Betty (Annaleigh Ashford) confronts Bill about his refusal to reverse her tubal ligation. He eventually agrees to do it, but still believes it is not a good idea.

    Podcasts:

    developed with YouTube
    PLAYLIST TIME:

    Latest News for: standard deviation

    How edge devices are becoming hackers’ gateway into Industrial IoT

    Tahawultech 30 Jan 2025
    Ekaterina Snegireva, Senior Analyst at Positive Technologies ... In the petrochemical industry, it aids in the automatic detection of deviations from production standards ... Ekaterina Snegireva, Senior Analyst at Positive Technologies, notes ... Image Credit.

    Duffy goes after Biden car efficiency rule

    The Hill 29 Jan 2025
    In , Duffy directed the National Highway Traffic Safety Administration (NHTSA) to immediately review the rule and to propose “the rescission or replacement” of standards that deviate from Trump White House policy.

    ET In The Classroom: Information Ratio

    The Times of India 29 Jan 2025
    By incorporating standard deviation into the ...

    Has growth become sticky?

    Business Line 29 Jan 2025
    It was also seen as a fallout of rigid policies that lacked innovation ... Prima facie, growth during this period has been volatile with a mean of 6.1 per cent, but a very high standard deviation of 5.5, indicating possibility of it moving either way.

    Hedging Is Crucial for CFD Brokers, but When Should One Avoid It?

    Finance Magnates 29 Jan 2025
    Assuming a 2 million USD standard deviation (adjusted based on historical evidence), the monthly profit or loss may fluctuate by approximately plus or minus 2 million USD ... With a 2 million USD standard deviation, the daily fluctuation would be..

    Human evolution in the USA: Education-linked genes being selected against, study suggests

    PsyPost 29 Jan 2025
    Human evolution is far from a relic of the past, as a new study in Behavior Genetics demonstrates ... For instance, the genetic predisposition for cognitive performance is estimated to decrease by approximately 0.055 standard deviations per generation.

    Public Notices | Jan. 28, 2025

    Opelika Observer 29 Jan 2025
    SECTION 7-37 GENERAL STANDARDS ... SECTION 7-38 SPECIFIC TECHNICAL STANDARDS ... The provisions of this Ordinance are minimum standards for flood loss reduction, therefore any deviation from the standards must be weighed carefully.

    It's time to modify how we pay teachers and student teachers | Opinion

    The Oklahoman 27 Jan 2025
    He found that a teacher who was half a standard deviation from the average educator effectiveness (69th percentile) increased the earnings of a class of 30 students by over $318,000 annually.

    Are middle children more cooperative and honest? Here’s what a massive study discovered

    PsyPost 27 Jan 2025
    These findings held true across both samples, with middle children scoring approximately 0.20 standard deviations higher than only children on these traits.

    After ‘faulty’ start, 1,800-kl water tank razed safely

    Hindustan Times 25 Jan 2025
    The tank was surrounded by densely-packed localities on its sides. Sameen Akhtar, the superintending engineer of Jal Nigam, claimed that the company had deviated from the standard demolition protocols, creating a major safety risk for residents ... ....

    XRP News Today: XRP Now Sees Bollinger Bands Expansion

    FrankNez 25 Jan 2025
    XRP News Today. XRP now sees Bollinger Bands expansion, signaling a volatility spike that is altering its price landscape ... Understanding Bollinger Bands ... They consist of a moving average and two standard deviation lines that fluctuate around it ... ....

    Top quark truth: Einstein’s theory passes world’s most powerful accelerator test

    Interesting Engineering 24 Jan 2025
    Scientists believe this particle can reveal principles beyond the Standard Model of particle physics (which is based on the special theory of relativity) ... Any violation of Lorentz symmetry is considered a deviation from the Standard Model of Physics ... .

    Franklin County accused of illegal 'spot reassessment,' with new owners paying more taxes

    Public Opinion 23 Jan 2025
    ... in Chambersburg showed deviations so large that they violated the International Association of Assessing Officers Standards, which is the generally accepted standards for property assessments.

    CBI hires outside firm for forensics operation assessment after data manipulation

    Fox31 Denver 22 Jan 2025
    However, the agency found that she “deviated from standard testing protocols and cut corners,” which raises concerns about how reliable her testing may have been.

    Secret Behind TRUMP Memecoin’s Meteoric Rise: $100 Soon?

    CryptoNewsZ 22 Jan 2025
    According to multiple sources, an analysis of the top 1,000 TRUMP memecoin holders reveals their deep pockets and calculated strategies ... The offering deviates markedly from standard cryptocurrency practices, where issuers typically retain 10-20% ... ....

    Most Viewed

    ×