1.5,1.6-Describing and Displaying Quantitative data

Question 1

quantitative

Answer 1

discreet ( countatable)

Question 2

continuous

Answer 2

all the way through ( every value in between)

Question 3

Describe the distribution means..

Answer 3

S-shape
O-potential outliers
C-center ( mean/median)
V-variability ( max-min)/range

+ Context ( what are we measuring)

Question 4

what are the different shapes of a graph?

Answer 4

unimodal- one bump
bimodal-2 bumps
unform- square-like

Question 5

the tails tells the tail

Answer 5

skewed left-tail left
skewed right-tail right

Question 6

symmetric

Answer 6

normal distribution

Question 7

mean

Answer 7

the arithmetic average of the data set

• Use only with symmetric data

Question 8

median

Answer 8

the middle point of a distribution

*use with unsymmetric data or outliers

Question 9

range

Answer 9

max-min

Question 10

Quartile 1

Answer 10

median of the lower half

Question 11

Quartile 3

Answer 11

the median of the upper half

Question 12

each part of the box plot is 25 % regardless of shape

Question 13

Finding outliers

Way too small< Q1 -1.5 (IQR)

Question 14

Finding Outliers
Way too big > Q3+1.5(IQR)

Question 15

What is the formula for IQR

Answer 15

Q3-Q1

Question 16

IQR and median are resistant to outliers