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A characteristic, usually a numerical value, which describes a sample is called a _____.

The median is the best measure of central tendency to use in order to describe the distribution of scores below pertaining to the average daily coffee consumption of a sample of individuals.   Daily Cups of Coffee Consumed (X)          f 4 or more                                                     2 3                                                                   2 2                                                                   1 1                                                                   3 0                                                                   3

For the following grouped frequency distribution table, how many people had scores less than X = 14? X               f 30-34        3 25-29        2 20-24        2 15-19        5 10-14        4 5-9            1  

A student takes a 10-point quiz each week in statistics class. If the student’s quiz scores for the first three weeks are 10, 8, and 8, then the mean score is M = 9.

If a set of scores covers a range of 70 points, then the grouped frequency table for the scores should use an interval width of 7 points.

Which of the following dosimeters can easily provide an instantaneous dose measurement?

Which of the following personnel dosimeters uses a lithium fluoride sensing material?

Which of these can measure exposure rates as low as 10 Gya per hour?

An individual received an absorbed dose of 3 Gy of x-rays to the gonads. What is the total effective dose?

A tumor receives a cumulative dose of 45.5 Gy over several weeks. What is the total dose in cGy?