Quiz #2: LO3, LO4, LO5, LO6

a unimodel has

• ONE peak

• is not completely symmetrical

• and is skewed

overall trend

stable, upward, downard

seasonal trend

if ups and downs are repetitive over the months/years

a bimodel has

two peaks

you find the mean by

adding all the values then dividing by the total - DOESNT NEED TO BE IN ORDER

the mode is

the most common number

the mean is pulled by the

tail of the skew

the 5 number summary include s

1. median

2. Q1

3. Q3

4. min

5. max

you find and an outlier when

its LESS than Q1-1.5(IQR)

its MORE than Q3+1.5(IQR)

bar chart and pie chart are

categorical

histogram and time series are

quantitative

a bar chart

• can have two or three categorical variables

• height of the bar determines the perctange, characteristic, frequency

• one categorical variable used to label horizontal axis

histograms

• show pattern in variability

• summary graph of ONE quantitative variable

• vertical axis that shows frequency and relative frequency (count vs percentage)

• bar = how many

line graphs

used to show time

the MEAN is smaller than the median when

its being pulled to lower numbers by the left tail

the mean is LARGER than the median when

the mean is being pulled to the right of the tail with higher numbers

find the range by

max - min

find the IQR by

Q3-Q1

with relative risk you

divide the two risks

with relative odds

you divide two odds

make sure to put the list of numbers in ____ when finding the median, mean, etc.

ORDER