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In general, the missing data totals were very low (between 0% and 1.6% within the different questionnaire length groups).
This was the first study to formally evaluate questionnaire length and prenotification in a full factorial design using multiple indicators of survey quality (i.e., response rates, time to respond, and item missing data totals).
Therefore, we tested the effect of questionnaire length (2 pages versus 4 pages) crossed with prenotification type (letter versus postcard) on response rates, response times, and missing data totals in the context of a large population-based mail survey.
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According to industry data, total premiums in California nearly tripled in the first dozen years after the law was enacted before stabilizing in the late 1980's.
According to United States Census Bureau data, total cargo imports and exports rose to 4,866,000 metric tons this year from 4,288,000 metric tons during the same period last year.
Potential rate is calculated by 29 area potential total divided by 29 area data total.
Count-rate data (total prompts, randoms, trues, live-time fractions, etc).
From experimental data: total mass = m = 0.51 kg, Piston diameter = d = 1.125 in.
Twenty-nine area data total shows the sum of data value among 29 areas from 2003 and 2005 to 2009.
The second panel displays employment data (total employed from the household survey), which starts a little later, 1976Q3 2011Q2.
Medians (black lines inside the boxes), interquartile ranges (width of the boxes representing the middle 50%% of data), total data ranges (whiskers), and outliers (black dots) are shown.
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CEO of Professional Science Editing for Scientists @ prosciediting.com