David M. Lane
- Central Tendency
- What is Central
- Measures of Central
- Balance Scale Simulation
- Absolute Difference
- Squared Differences
- Median and Mean
- Mean and
- Measures of
- Variability Demo
- Effects of Transformations
- Variance Sum
- Statistical Literacy
PDF (A good way to print the chapter.)
Descriptive statistics often involves using a
few numbers to summarize a distribution. One important aspect
of a distribution is where its center is located. Measures
of central tendency are discussed first.
A second aspect of a distribution is how spread out it is. In
other words, how much the numbers in the distribution vary from
one another. The second section describes measures
of variability. Distributions can differ in shape. Some distributions
are symmetric whereas others have long tails in just one direction.
The third section describes measures of the shape of distributions.
The final two sections concern (1) how transformations
affect measures summarizing distributions and (2) the variance
an important relationship involving a measure of variability.
Please answer the questions:
David M. Lane - Mwelekeo wa Kati - Nini ni Kati - Hatua za Kati - Usawa wa Usawa Simulation - Tofauti ya Kamili - Tofauti za Quad - Median na Mean - Mean na - Hatua za - Demo ya Tofauti - Athari za Mabadiliko - Jumla ya Tofauti - Uandishi wa Takwimu PDF (Njia nzuri ya kuchapisha sura.) Takwimu za ufafanuzi mara nyingi huhusisha kutumia namba chache kuelezea kwa ufupi usambazaji. Sehemu moja muhimu ya usambazaji ni mahali ambapo kitovu chake kiko. Vipimo vya mwelekeo wa kati ni kujadiliwa kwanza. Kipengele cha pili cha usambazaji ni jinsi ilivyoenea. Kwa maneno mengine, ni kiasi gani idadi katika usambazaji kutofautiana kutoka kwa kila mmoja. Sehemu ya pili inaelezea vipimo vya kutofautiana. Usambazaji unaweza kutofautiana katika umbo. Baadhi ya usambazaji ni symmetric wakati wengine kuwa na mikia mirefu katika mwelekeo mmoja tu. Sehemu ya tatu inaelezea vipimo vya umbo la usambazaji. Sehemu mbili za mwisho zinahusu jinsi mabadiliko yanavyoathiri vipimo vinavyofupisha usambazaji na tofauti (uhusiano muhimu unaohusisha kipimo cha kutofautiana). Tafadhali jibu maswali: