Answer True orrala to question nurnbent-10. () To convert a frequency dietritbut
ID: 3047882 • Letter: A
Question
Answer True orrala to question nurnbent-10. () To convert a frequency dietritbution to a relaive frequeney distribution, divide each dlass resuency by the sum of the class frequencies 2) Dala that can only be clasifled into calegories is nominal date (3) Extremely high or low acores affect the value of the median (4) The variance is the mean of the sum of the squared deviations belween each olservation and the median (6) In general we should construct a frequency distribution so that there are either 4 on 24 classes (0) A cumulalive frequency distribution is used when we want to delermine how many observations lie above or below certain values (7) A set of interval or ratio level data can have more than one arithmetic mean (8) For salaries of $102,000, $08,000, 846,000, $106,000 and $101,000, the arihmetic mean would be an appropriate average (9) Three persons earn $8 an hour, si earm 50 an hour, and one earns $12 an hour. The weighted mean hourly wage is $9 (10)In a negatively skewed distribution, the mean is always greater than the medianExplanation / Answer
1. To convert a frequency distribution to a relative frequency distribtion divide each class frequency by sum of the class frequencies. True
2. Data that can only be classified into categories is nominal data. True
3. Extremely high or low scores affect the value of median. False.
It affects the mean, not median. As median is the middlemost value. it depends on position. not value of the variable.
4. The variance is the mean of the sum of squared deviation between each observation and median.
False.
The variance is the mean of the sum of squared deviation between each observation and mean.
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