Working with Numbers and Statistics: A Handbook for by Charles Livingston, Paul S. Voakes,
By Charles Livingston, Paul S. Voakes,
Operating With Numbers and information: A instruction manual for newshounds will bolster math talents and enhance math self belief for reporters in any respect ability degrees. Authors Charles Livingston and Paul Voakes built this source publication to enhance journalistic writing and reporting, permitting reporters to:*make exact, trustworthy computations, which in flip allows one to make appropriate comparisons, positioned proof into viewpoint, and lend very important context to stories;*recognize faulty displays, no matter if willfully spun or simply carelessly relayed;*ask applicable questions about numerical matters;*translate advanced numbers for audience and readers in methods they could easily understand;*understand computer-assisted reporting; and*write livelier, extra particular items by using numbers.The math is gifted in a journalistic context all through, permitting readers to determine how the approaches will come into play of their work.Working With Numbers and records is designed as a reference paintings for journalism scholars constructing their writing and reporting talents. it is going to additionally serve pros as a useful gizmo to enhance their figuring out and use of numbers in information tales.
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Extra resources for Working with Numbers and Statistics: A Handbook for Journalists (Lea's Communication Series) Writing & Journalism
Sample text
If the average clerical salary at a company is $30,000 with a standard deviation of $5,000, a rough estimate is that two thirds of the clerical employees make between $25,000 and $35,000 and 95 percent make between $20,000 and $40,000. This rule applies best when the group is large, say at least 60. It also applies best when the data are spread out "normally;" see Chapter 7 for more about the Normal Distribution. When the data are spread out very irregularly, perhaps occurring in bunches, the rule does not apply as well.
The margin of error in the poll was ±10 percent with a confidence level of 95 percent. This means that the pollster believes that the true percentage of voters who favor Smith lies between 49 and 69 percent. The techniques used in the poll will produce a result within that interval 95 percent of the time. Computing the Margin of Error. Statistical theory provides formulas for estimating the margin of error. Here are two useful, basic rules of thumb. 1. 1 or 10 percentage points. 08 or 8 percentage points.
How many centimeters are there in 1 foot? 333 yards (divide by 3). 914). 5 centimeters (multiply by 100). How many feet are there in 1,600 meters? 55 yards. ) Then multiply by 3 to convert yards to feet, and get 5,250 feet. Notice that because a mile is 5,280 feet, a mile is roughly 30 feet longer than 1,600 meters. 10. ISSUES OF LOGIC * Caution with Area In general, if the linear dimensions of a region are doubled, the area goes up by a factor of 4. More generally, if the linear dimensions are mulitplied by a factor of r, the area is multiplied by a factor of r2.