Studied by 10 people
What is the 5 number summary?
min, q1, q2, q3, max
What does the box in the box plot contain?
the middle 50% of data
What is the interquartile range?
q3-q1
What is considered an inner fence outlier?
upper: q3 + 1.5(IQR)
lower: q1 - 1.5(IQR)
What is considered an outer fence outlier?
upper: q3 + 3(IQR)
lower: q1 - 3(IQR)
How many boxplots can the calculator hold?
3 at a time
What must you include in a stem and leaf plot?
A title and a key
How many stems are appropriate per chart?
4-7 stems
What are the three features of distribution?
center, shape, and gaps/outliers
center/shape
symmetric - normal, unimodal, symmetric, bell
bimodal - may be an underlying variable
skewed - may have an upper or lower limit
uniform - maybe random; may have a lower or upper limit
gaps/outliers
observation that falls outside the pattern of the data
What do you do when you have too many data points?
split them! either by 0-4 and 5-9 or 0-1, 2-3, 4-5, 6-7, 8-9
What is Statsistics?
the science of collecting, organizing, and interpreting data
What is statsitics?
numbers derived from the data
What’s the difference between data and datum?
data are plural; datum is singular
What are data?
Information systematically recorded with #s or labels with a context
Who
What population is being measured? Whole or part?
What
The variables that were measured
When
When was the study done?
Where
Where did the measurements take place?
Why
Why was the study performed?
How
How were data measured? Was it representative or biased?
What are the kinds of variables?
Quantitative - continuous (m, s, km) or discrete (# of ladybugs)
Categorical - ordered (ordinal or grades) or unordered (like/dislike)
Note
Flashcard