Term
| frequency distribution displays |
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Definition
pie charts, bar graphs and histograms are all considered to be:
- correlation graphs
- frequency distribution displays
- tables
- longitudinal study graphs |
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Term
| visually displays the number of times a value occurs in the data |
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Definition
a frequency distribution display or frequency curve:
- only documents changes over time
- has external validity
- documents outliers that appear in the data
- visually displays the number of times a value occurs in the data |
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Term
| continuous or interval/ratio data |
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Definition
histograms are a visual display of:
- conclusions drawn from results of data
- continuous or interval/ratio data
- categorical or nominal data
- correlation data |
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Term
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Definition
bar graphs are a visual display of:
- conclusions drawn from results of data
- continuous or interval/ratio data
- categorical or nominal data
- correlation data |
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Term
| correlation data or potential relationship |
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Definition
histograms are a visual display of:
- conclusions drawn from results of data
- continuous or interval/ratio data
- categorical or nominal data
- correlation data or potential relationships |
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Term
| number of data points in data set |
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Definition
what is the N of a data set?
- number of data points in the data set
- most frequently occurring value of the data
- value of largest data point of group
- sum of all data points in data set |
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Term
| most frequently occurring value of data |
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Definition
what is the mode of a data set?
- number of data points in the data set
- most frequently occurring value of the data
- value of largest data point of group
- sum of all data points in data set |
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Term
| number you calculate by subtracting smallest from largest |
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Definition
what is the range of a data set?
- number of data points in the data set
- most frequently occurring value of the data
- number you calculate by subtracting smallest value from largest value
- sum of all data points in data set |
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Term
| calculated interval/ratio data |
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Definition
the mean is:
- calculated for interval/ratio level of data
- calculated for nominal level of data
- mathematically calculated center of data set
- only a/c
- only b/c |
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Term
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Definition
in normal distribution, the data display is symmetrical in shape. for data that are normally distributed the 68-95-99.7 applies.
- 1st t, 2nd f
- 1st f, 2nd t
- both t
- both f |
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Term
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Definition
standard deviation is:
- measure of correlation
- related to range of data in set
- measure of prediction |
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Term
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Definition
the standard deviation is related to:
- 68-95-99.7 rule
- quartiles and percentiles
- both a/b
- neither a/b |
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Term
| no, r value only calculates association and there is a strong negative correlation |
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Definition
r = -0.80. the results are that one thing causes another.
- yes, because there is a strong correlation
- yes, because there is a strong negative correlation
- no, r value only calculates association
- no, there is a strong negative correlation |
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Term
| based on level of measurement |
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Definition
statistical tests used by researchers to analyze statistical data are selected
- because of uncommon names they are given
- based on the calculated median of data
- based on the calculated mean, range and standard deviation of data
- based on level of measurement of data
- based on measures of central tendency used to find average |
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Term
| parametric and non parametric |
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Definition
common statistical tests include a variety of
- population tests and statistical tests
- parametric and non parametric tests
- internal tests and external tests |
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Term
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Definition
a 95% confidence interval for a mean of 2.5 with a SD of 0.3 would be:
- 2.5+/-0.6
- 1.9 - 3.1
- none of the above
- all of the above |
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Term
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Definition
the results of stat tests are considered to be stat sig if
- p value is calculated
- alpha level = 0.05
- calculated p value is below set alpha level
- alpha level set at 0.01 |
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Term
| high probability of difference |
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Definition
stat sig means that
- there is a high probability of difference
- null hypothesis can be rejected
- clinical sig has been achieved
- a/b
- a/b/c |
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Term
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Definition
no stat sig means that
- there is a high probability of difference
- null hypothesis can be rejected
- clinical sig has been achieved
- a/b
- a/b/c |
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