1. The relative frequency of an outcome is the probability of its occurrence. Tr

Question

1. The relative frequency of an outcome is the probability of its occurrence. True or False

2. A researcher records the hospital admission rates for coronary heart disease at 10 local hospitals. She finds that 2 different hospitals had the highest overall rates of hospital admissions. Which measure of central tendency did this researcher use to describe these data?

mean

median    

mode

range

3. Which of the following terms are least likely to be used to describe qualitative data?

Nominal

Descriptive

Categorical

Numeric

4. A psychologist reviews her notes for all her patients and determines that on average her patients complete therapy in 24 days. The average time to complete therapy among all her patients is called a(n)

population parameter

sample statistic     

inferential statistic

time trial

5. A sampling distribution is a distribution of all sample means or sample variances that could be obtained in samples of a given size from the same population. True or False

6. The range of scores in each interval of a grouped frequency distribution is called the:

Simple frequency

Interval width

Real range

grouped date

Explanation / Answer

1. The relative frequency of an outcome is the probability
of its occurance. That' true. Probability distribution and relative frequency are the same and range from 0 to 1.

2. The central tendancy for the researcher Range.

3. Discreptive data can't be measured in numerical sense and hence is qualitiative

4. Population parameter as the statistic has been got from the entire population

5. True

6. Interval width

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