A computer uses random digit dialing to create phone numbers from a list of all telephone exchanges, which allows unlisted numbers to be called as well as listed numbers.
32.
Common methods of conducting a probability sample of the household population in the United States are Area Probability Sampling, Random Digit Dial telephone sampling, and more recently, Address-Based Sampling.
33.
Bill Fox played the numbers in his birthday, his wife's birthday, the birthday of a grandson, and then for good measure plucked a few random digits from his head.
34.
I think it's generally agreed that memorizing a single set of 1000 ordered random digits ( say, the first 1000 digits of pi ) for long-term use isn't that hard.
35.
Along with Joseph Waksberg, Mitofsky is credited with developing an efficient method of sampling telephone numbers using random digit dialing, which has since been widely adopted as a sampling method.
36.
To calculate these weights, comScore regularly recruits panelists using random digit dialing and other offline recruiting methods to accurately determine how many users are online, aggregated by geography, income, and age.
37.
Even though it takes a lot of work to translate, and by the time you're done you've risked losing your place dozens of times, it's still easier to remember than random digits.
38.
Each survey uses an RDD ( Random Digit Dial ) sample of both landline and cell phone numbers, so as to ensure an accurate representation of the U . S . population.
39.
In 1947, the RAND Corporation generated numbers by the electronic simulation of a roulette wheel; the results were eventually published in 1955 as " A Million Random Digits with 100, 000 Normal Deviates ".
40.
As automation came of age, the RAND Corp . used a kind of electronic roulette wheel to generate a classic work, published in 1955, called " A Million Random Digits With 100, 000 Normal Deviates ."
