In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range.
Standard deviation may be abbreviated SD, and is most commonly represented in mathematical texts and equations by the lower case Greek letter sigma σ, for the population standard deviation, or the Latin letter s, for the sample standard deviation.The standard deviation of a random variable, sample, 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 unit as the data.
The standard deviation of a population or sample and the standard error of a statistic (e.g., of the sample mean) are quite different, but related. The sample mean's standard error is the standard deviation of the set of means that would be found by drawing an infinite number of repeated samples from the population and computing a mean for each sample. The mean's standard error turns out to equal the population standard deviation divided by the square root of the sample size, and is estimated by using the sample standard deviation divided by the square root of the sample size. For example, a poll's standard error (what is reported as the margin of error of the poll), is the expected standard deviation of the estimated mean if the same poll were to be conducted multiple times. Thus, the standard error estimates the standard deviation of an estimate, which itself measures how much the estimate depends on the particular sample that was taken from the population.
In science, it is common to report both the standard deviation of the data (as a summary statistic) and the standard error of the estimate (as a measure of potential error in the findings). By convention, only effects more than two standard errors away from a null expectation are considered "statistically significant", a safeguard against spurious conclusion that are really due to random sampling error.
When only a sample of data from a population is available, the term standard deviation of the sample or sample standard deviation can refer to either the above-mentioned quantity as applied to those data, or to a modified quantity that is an unbiased estimate of the population standard deviation (the standard deviation of the entire population).
Kwa Bajeti ya Tanzania shilling elfu hamsini naweza kupata wapi chumba standard ambapo nitapanda gari moja mpaka mjini na kuweza kurudi night kali bila hofu ya vibaka.
Natanguliza shukurani.
Muhimu: thamani ya pesa inashuka kulingana na muda, shilingi 50 ya 2000 ilikuwa nauli ya daladala kwenda na kurudi lakini hauwezi fananisha na ya 2020 onayonunua pipi moja tu.
Ikiwa mtu ana sifa hizi.
Kashajenga
umri miaka 35....
watoto wanne: first yupo la tano, second yupo la nne, third...
Tanzania ni moja ya nchi mtu anaweza fanya jambo la kawaida sana akaitwa genius au akili kubwa
Mtu anaweza copy kitu wikipedia au kitabu chochote alafu akaongeza ongeza na kingereza chenye misamiati isiyokua na formula basi akaitwa genius
Tanzania na afrika kwa ujumla standard zetu za mambo...
"Hii ni biashara ya familia walianza babu zetu ambao mpaka sasa wameshafariki na sisi ni uzao wa tatu na huyo tunaemuona ni kizazi cha nne anaweza akachukua akaendeleza. Matumaini yetu amemaliza chuo juzi lakini ataanzia ngazi za chini atafanya kinachotakiwa halafu akifanikiwa atachukua kazi...
Wakati wa sikukuu ya IDDI kule Zenji mishahara ilitoka tar 14 ili WAISLAMU wajiandae.
Tuliona mbali tukapiga kelele kuwa serikali isiwe na dini.
Lakini watu wakakaza fuvu.
Haya sasa na sisi WAKRISTO tunaomba mshahara mapema ili tujiandae na Christmas.
Nimefanya simple research nikaona kuwa - Intergovernmental Agreements (IGAs) na Host Government Agreements (HGAs), zina template maalum ambayo mabeberu waliitengeneza kulinda maslahi yao na kuiba mali za developing world. Nimesoma mikataba iliyopo kwenye google nikagundua format hiyo iko kila...
1. Ufaulu huu mkubwa tulioushuhudia si kuwa watoto walisoma sana na kuwa na uwezo wa kujibu maswali. Kwanini nasema hivyo:
Haiwezekani shule ambayo mwaka jana ilikuwa na 90% or so Div 0/Div 4, leo ghafla ina div 1 and 2.
2. Shule ambazo zimejiwekea rekodi ya kudumu ya kufeli, leo zinaongoza...
Benki ya Standard Chartered na Access Bank Plc zimefikia makubaliano ya uuzaji wa hisa za Standard Chartered katika kampuni tanzu nchini Angola, Cameroon, Gambia na Sierra Leone, pamoja na Biashara yake ya Wateja, Binafsi na Biashara ya Benki nchini Tanzania, kwa kutegemea idhini ya udhibiti...
Uganda has announced the start of construction of the Standard Gauge Railway (SGR) in August, in a decision that revives hope for the extension of Kenya’s Sh327 billion project whose viability was dependent on the Ugandan section.
Uganda says it has secured funds from the Standard Chartered...
Tunapambana sana ili law school iruhusu "chakula ambacho hakijaiva" kiingie meza ya chakula. Jibu liko wazi, walaji wataharisha, wataumwa matumbo.
Nchi yetu imekuwa ikilia kuhusu mikataba ya hovyo inayosainiwa baada ya kupitishwa (vetted) na wanasheria. Nchi yetu imekuwa ikilia kuhusu kushindwa...
Video hapo juu ni mapokezi (maandamo) ya Zitto huko Tunduru na Polisi kabla ya hapo wali-fake kumzuia Zitto na baada ya simu moja ya maelekezo kusanyiko lile liliendelea na habari zake kama mnavyoona.
Hoja hapa ni kwanini jambo fanani na hilo likifanywa na Chadema huzuiliwa tena kwa nguvu ya...
Standard Bank Group, benki ya kimataifa na yenye ushawishi katika ufadhili wa miradi mikubwa ya maendeleo barani Afrika imesema ujenzi wa Bomba la Kusafirisha Mafuta Ghafi la Afrika Mashariki (EACOP) utakuwa na manufaa kwa wakazi wa Jumuiya ya Afrika Mashariki. Ofisa Mtendaji Mkuu wa Standard...
Kuna swali najiuliza, hivi team ikisajili mchezaji na kabla ya deadline huyo mchezaji huyu akawa mgonjwa, inamaana hairuhusiwi tena kusajili mchezaji mwingine kabla ya hiyo deadline?
Kama ni ndio basi kuna mahala kanuni zetu hazipo vizuri.
Sipo hapa kusema nani yupo sahihi nan ani hayupo...
Position Summary
Act to End Neglected Tropical Diseases (NTDs) | East is a five-year project funded by the U.S. Agency for International Development (USAID) that supports national NTD control programs for the control and elimination of five targeted NTDs: lymphatic filariasis, onchocerciasis...
Head, Credit Analysis
Dar es Salaam
Standard Chartered
Standard Chartered plc is a British multinational banking and financial services company .
Job Summary
Management of team of credit analyst by provided leadership and support needed to achieve their objectives.
Primarily responsible for...
Mheshimiwa Rais Safari zake zimekuwa nyingi sana tujifunze kwa wenzetu walioendelea viongozi wao hawasafiri hovyohovyo safari zao huwa ni za kimkakati Sasa Rais wetu anaposafiri safiri kila Mara hasara ni nyingi kuliko faida
Just imagine Rais ana mabalozi ana mawaziri wa wizara husika yeye...
Kuna mambo mengine huwa yanakera sana!! Kama Rais Samia anaamini kwa dhati IMANI ya CCM kuwa binadamu wote ni sawa na kuwa kila mtu anastahili heshima ya kutambuliwa na kuthaminiwa utu wake, inakuwaje akaona kuwa watumishi wengine wanastahili mafao kwa kikokotoo cha asilimia 33% wakati wabunge...
Msajili wa vyama vya siasa amebariki uamuzi wa Mbatia na Sekretarieti yake yote KUTOJIHUSISHA na siasa ndani ya NCCR Mageuzi hadi itakapoamuliwa vinginevyo (yaani endapo wataenda mahakamani), Lakini tukija upande wa wabunge wa Covid 19, wenyewe wataendelea KUJIHUSISHA na siasa ndani ya CHADEMA...
Kuna hii habari kwamba Standard Chartered Bank wanataka kufungasha vilago ikoje?
Kama ni kweli, Juzi kati tuliambiwa, mama kayafufua mabenki hili halijafufuka?.
NB; Standard Chartered Bank ni banker wangu
JamiiForums uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.