Introduction to Statistics for Geographers and Earth by R.B.G. Williams

By R.B.G. Williams

Show description

Read Online or Download Introduction to Statistics for Geographers and Earth Scientists PDF

Best introduction books

The Warren Buffett Portfolio. Mastering the Power of the Focus Investment Strategy

The sequel to the hot York instances bestseller The Warren Buffett method unearths easy methods to profitably deal with shares when you pick out them
Staking its declare at the ny occasions Bestseller record for 22 weeks, The Warren Buffett approach supplied readers with their first check out the suggestions that the grasp makes use of to select shares. The follow-up to that booklet, The Warren Buffett approach Portfolio is the subsequent logical step. it is going to support readers throughout the strategy of development an excellent portfolio and coping with the shares going forward.
Building and balancing a portfolio is arguably extra very important than opting for any unmarried inventory. within the Warren Buffett Portfolio, Robert Hagstrom introduces the following wave of funding approach, referred to as concentration making an investment. A entire funding approach used with mind-blowing effects by way of Buffett, concentration making an investment directs traders to pick a focused crew of companies through studying their administration and monetary positions in comparison to their inventory costs. concentration making an investment relies at the precept shareholder's go back from possessing a inventory is eventually decided by means of the economics of the underlying business.
Using this system, Hagstrom exhibits how one can determine profitable businesses and deal with investments synergistically for the very best effects. The Warren Buffett Portfolio attracts at the collective knowledge of Warren Buffett and different professionals of concentration making an investment, together with economist John Maynard Keynes and traders Philip Fisher, invoice Ruane of the Sequoia Fund, and Charlie Munger, Vice-Chairman of Berkshire Hathaway. It essentially outlines the options and philosophies of concentration making an investment and illustrates the right way to enforce them successfully.

In the Field: An Introduction to Field Research (Social Research Today)

An authoritative consultant to the issues and approaches linked to information assortment and research in box study.

Additional info for Introduction to Statistics for Geographers and Earth Scientists

Sample text

These differences are presumably only accidental. Were the sequence longer, the digits would doubtless appear in more equal proportions. In a random sequence not only ought individual digits to appear with approximately equal frequency, but also pairs of digits such as 11, 43, 57 and 96, triplets such as Ill, 274, 816 and 954, and so on. If there is any order , pattern or relationship in a sequence of random digits, it is entirely the result of chance. Consider again the sequence of digits 4 1 6 3 3 4 3 4 244 1 465 6 34 Introduction to Statistics for Geographers and Earth Scientists The digits would seem to be arranged in no particular order.

One cannot prove a negative, save in special circumstances . Although the digits may seem to lack order this is not proof that no order exists . Just because a sequence appears incompressible , this does not mean that it cannot be compressed. Defining randomness in terms of process would seem less open to objection than defining it in terms of the results. Nevertheless randomness still cannot be proven since one can never be sure that a supposedl y random process is operating in an entirely random manner.

45 km. The same result can be obtained by adding the real lower limit to the real upper limit, and dividing by two viz. 45 km. There are no hard and fast rules concerning the construction of frequency distributions. It is very much a matter of personal choice what classes are used. Nevertheless certain obvious points need to be borne in mind: 40 Introduction to Statistics for Geographers and Earth Scientists 1. If too many classes are used, the distribution will be rendered unwieldy and will not summarise the data sufficiently.

Download PDF sample

Rated 4.09 of 5 – based on 28 votes