click links in text for more info
SUMMARY / RELATED TOPICS

Skewness

In probability theory and statistics, skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean. The skewness value can be undefined. For a unimodal distribution, negative skew indicates that the tail is on the left side of the distribution, positive skew indicates that the tail is on the right. In cases where one tail is long but the other tail is fat, skewness does not obey a simple rule. For example, a zero value means. Consider the two distributions in the figure just below. Within each graph, the values on the right side of the distribution taper differently from the values on the left side; these tapering sides are called tails, they provide a visual means to determine which of the two kinds of skewness a distribution has: negative skew: The left tail is longer. The distribution is said to be left-skewed, left-tailed, or skewed to the left, despite the fact that the curve itself appears to be skewed or leaning to the right. A left-skewed distribution appears as a right-leaning curve.

Positive skew: The right tail is longer. The distribution is said to be right-skewed, right-tailed, or skewed to the right, despite the fact that the curve itself appears to be skewed or leaning to the left. A right-skewed distribution appears as a left-leaning curve. Skewness in a data series may sometimes be observed not only graphically but by simple inspection of the values. For instance, consider the numeric sequence, whose values are evenly distributed around a central value of 50. We can transform this sequence into a negatively skewed distribution by adding a value far below the mean, a negative outlier, e.g.. Therefore, the mean of the sequence becomes 47.5, the median is 49.5. Based on the formula of nonparametric skew, defined as / σ, the skew is negative. We can make the sequence positively skewed by adding a value far above the mean, a positive outlier, e.g. where the mean is 52.5, the median is 50.5. The skewness is not directly related to the relationship between the mean and median: a distribution with negative skew can have its mean greater than or less than the median, for positive skew.

In the older notion of nonparametric skew, defined as / σ, where μ is the mean, ν is the median, σ is the standard deviation, the skewness is defined in terms of this relationship: positive/right nonparametric skew means the mean is greater than the median, while negative/left nonparametric skew means the mean is less than the median. However, the modern definition of skewness and the traditional nonparametric definition do not always have the same sign: while they agree for some families of distributions, they differ in some of the cases, conflating them is misleading. If the distribution is symmetric the mean is equal to the median, the distribution has zero skewness. If the distribution is both symmetric and unimodal the mean = median = mode; this is the case of a coin toss or the series 1,2,3,4... Note, that the converse is not true in general, i.e. zero skewness does not imply that the mean is equal to the median. A 2005 journal article points out:Many textbooks teach a rule of thumb stating that the mean is right of the median under right skew, left of the median under left skew.

This rule fails with surprising frequency. It can fail in multimodal distributions, or in distributions where one tail is long but the other is heavy. Most though, the rule fails in discrete distributions where the areas to the left and right of the median are not equal; such distributions not only contradict the textbook relationship between mean and skew, they contradict the textbook interpretation of the median. For example, in the distribution of adult residents across US households, the skew is to the right. However, due to the majority of cases is less or equal to the mode, the median, the mean sits in the heavier left tail; as a result, the rule of thumb that the mean is right of the median under right skew failed. The skewness of a random variable X is the third standardized moment μ ~ 3, defined as: μ ~ 3 = E ⁡ = μ 3 σ 3 = E ⁡

Cricket for a Cause

Cricket for a Cause is a charitable cricket league in Dubai, taking place during Ramadan for the past two years. The league was founded by a high school student at Dubai College; the league has a partnership with Cover Drive, an indoor sports facility in Dubai, the venue for the league. The league is endorsed and supported by Dubai Cares and the IAC; the inaugural edition of the event took place between the 21st of June 2015 and the 1st of July 2015. 8 teams participated in the event. The format was 6 overs/6 players per side; the teams were placed in 2 groups of 4, the top 2 teams for each group qualified for the semi finals. The league was won by Emax; the league started off raising 13,300AED for Dubai Cares, the largest charity in Dubai. After the inaugural event was a success, Yahya built a team of 3 to try and increase the money raised for charity in 2016. With the help of Suraj Chablani, Jonathan Lattouf and Jordan Russell, Yahya was able to make the 2016 event more successful by increasing the number of sponsors and money generated for charity.

The following year, Yahya wanted to make the event bigger and had a target of 30,000AED to be raised for Dubai Cares. 16 teams participated in the 2016 edition, double from the previous year. Teams were placed with the top side from each group qualifying for the semi-finals; the league was won by Ladybird Nursery. By the end of the tournament, Yahya was able to over 40,000AED for Dubai Cares. For his efforts and achievements, Ashar was awarded the "Everyday Heroes" award by Youth Service America The league and its organizers have announced plans to organize another tournament in Ramadan 2017, with the aim of raising 100,000AED for charity. Yahya announced plans to increase the organization team to around 10 people. In April 2017, Yahya was inducted in Youth Service America's Global Youth Council for his efforts in helping children in developing countries gain access to a quality level of education. 2015- Pringles, Emax, Madcom, Du 2016- Pringles, Pepsi, Du, Red Bull, Ladybird Nursery, UniGulf, Bayt.com, The Entertainer and UM MENA

Rotoroa Island

Rotoroa Island is an island to the east of Waiheke Island in the Hauraki Gulf of New Zealand. It covers 82 hectares; the Salvation Army purchased it for £400 in 1908 from the Ruthe family to expand their alcohol and drug rehabilitation facility at nearby Pakatoa Island. Men were treated at Home Bay at Rotoroa; this treatment facility was closed in 2005. The island was leased from the Salvation Army in February 2008 by Neal and Annette Plowman, who formed a trust to create a conservation park on the island, they have begun a revegetation project which will include 400,000 native plants. The chapel and jail are being restored and a visitor centre will be built, they gave the island to Auckland in February 2010 and it was opened on 26 February 2011. The Plowmans funded the nationwide Next Foundation; the island is accessible through various air service companies. List of islands of New Zealand

Perry Florio

Perry Florio, is a retired American professional ice hockey player who spent the majority of his career with the Johnstown Chiefs of the ECHL. Florio played the 1986 and 1987 seasons for the Providence College Friars, leading the team in penalty minutes both years. Following the 1986 season, Florio was named to the United States men's national junior ice hockey team for the World Junior Championships. Florio transferred to Northern Michigan University, where he played ten games in his senior year in 1989, he started his pro career in the 1989-90 season for the Knoxville Cherokees of the East Coast Hockey League before going to the Johnstown Chiefs the next season. Save for a three-game stint with the Hershey Bears of the American Hockey League in 1992, he played the rest of his professional career in Johnstown, retiring after the 1995 season. At the time of his retirement, he was the all-time ECHL leader in games played, he was further honored by being named to the ECHL's all-time 10th Anniversary Team in 1997.

Florio played in Roller Hockey International for the Philadelphia Bulldogs in 1994 and 1995. After retiring as a player, Florio became an assistant coach for the Roanoke Express of the ECHL in 1998, was named head coach and general manager in 2000. After making some controversial and unsuccessful trades, he was fired in January 2003 with the team just out of first place, a move unpopular with the players, he was promptly hired as interim head coach for the Anchorage Aces, with whom he finished the season, before going on to be the head coach for the Pee Dee Pride in the 2004 and 2005 seasons. He was the head coach of the Elmira Jackals of the United Hockey League in 2006. Biographical information and career statistics from The Internet Hockey Database

Ksaver Ĺ andor Gjalski

Ksaver Šandor Gjalski was a Croatian writer and civil servant. He was born Ljubomil Babić at Gredice, near Klanjec in Hrvatsko Zagorje into a minor aristocratic family, he earned law degrees in Zagreb and Vienna. He was involved in politics. In 1906, he was elected into the Croatian Parliament. From 1917-18, he held the post of mayor of the Zagreb county, he wrote novels, but his best known work is Pod starim krovovima, a collection of short stories in which he described the economic decline of the Croatian aristocracy. His writings were inspired by Turgenev and Šenoa, as well as realism and romanticism in general, his major works are: U novom dvoru, Pod starimi krovovi, U noći, Janko Borislavić, Đurđica Agićeva, Na rođenoj grudi, Radmilović, Za materinsku rieč, Dolazak Hrvata, Pronevjereni ideali, etc

Jupudi

Jupudi is a village in Guntur district of the Indian state of Andhra Pradesh. It is located in Amaravathi mandal of Guntur revenue division; the village forms a part of Andhra Pradesh Capital Region, under the jurisdiction of APCRDA. Jupudi is situated to the west of the mandal headquarters, Amaravathi, at 16.56033°N 80.25563°E / 16.56033. It is spread over an area of 2,422 ha; as of 2011 Census of India, Jupudi had a population of 2,422, including 1,226 males and 1,196 females with a gender ratio of 976 females per 1000 males. 310 are with a child gender ratio of 902 girls per 1000 boys. The average literacy rate stands at 57.86%. Jupudi Gram Panchayat is the local self-government of the village. There are wards, each represented by an elected ward member; the present sarpanch is vacant, elected by the ward members. The village is administered by the Amaravathi Mandal Parishad at the intermediate level of panchayat raj institutions; as per the school information report for the academic year 2018–19, the village has only one MPP school.

List of villages in Guntur district