Term
Four major properties describe a set of
data: |
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Definition
1. central central tendency tendency
2. variability
3. skewness
4. kurtosis |
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Term
| Population parameters identified by? |
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Definition
Greek letters
μ (mu) – mean of a population
σ (( i ) sigma) – stt d d d i ti f andard deviation of a
population |
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Term
Sample statistics – identified by Roman what
letters? |
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Definition
(x-bar) – mean of a sample
s – standard deviation of a sample |
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Term
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Definition
how data clusters
around a central point
1. Arithmetic Arithmetic mean mean
2. Median
3. Mode
4. Midrange
5. Midhinge |
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Definition
| = (sum of data)/number of data points |
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Term
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Definition
middle value in an ordered
sequence of data,(n+1)/2, |
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Term
| median occurs at what ordered obsbervation/ |
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Definition
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| Is the median effected by extreme data figures? |
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Definition
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Definition
the most frequently occurring
data value in a data set |
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| Can extreme data points distort the midrange? |
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| what order should figured be when determining quartiles? |
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Definition
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| Q1 data value that occurs at |
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Definition
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| Q2 data value that occurs at |
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Definition
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| Q3 data value that occurs at |
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Definition
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Term
| Variability, or dispersion |
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Definition
the amount
of variation or spread in data
1. Range
2. Interquartile range
3. Variance
4. Standard deviation |
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Term
| what does range represent? |
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Definition
e total spread in the
data |
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Definition
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| Is range distorted by extreme data values? |
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Definition
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Definition
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What does Variance/Standard
Deviation mean? |
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Definition
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| If sample standard dev. and variance are divided by what? |
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Definition
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Definition
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| The more dispersed the data, the larger the (3 of em') |
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Definition
| Range, standard dev., variance |
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Term
If all data values are equal: range, variance,
and standard deviation = |
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Definition
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| Range, variance, and standard deviation can never be? |
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Definition
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What is
Five-Number Summary
for Central Tendency? (5) |
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Definition
Xsmallest,
Q1, Median, Q3, Xlargest |
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Term
| Box-and-Whisker Plot uses what data? |
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Definition
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