Ch 1-5

Question 1

IQR rule

Answer 1

1. Q3-Q1=IQR
2. IQR * 1.5
3. Add Q3 (upper boundary)
4. Subratc Q1 (lower boundary)

Question 2

joint relative frequency

Answer 2

row + column/ table total

Question 3

relativ frequency

Answer 3

% of things having each value

Question 4

spread

Answer 4

max-min
“ranges from __ to __”

Question 5

association

Answer 5

knowing the value of 1 variable helps predict the other variables values

Question 6

S
O
C
S

Answer 6

add context
Shape
Oddballs
Center
Spread

Question 7

catergorical

Answer 7

puts individuals into groups

Question 8

shape

Answer 8

skewed left, right, roughly symmetric

Question 9

discrete

Answer 9

fixed set of values with gaps (counting)

Question 10

oddballs

Answer 10

IQR rule, gaps

Question 11

standard deviation (sd)

Answer 11

average distance away from mean

Question 12

continious

Answer 12

take any value on a number line (measuring)

Question 13

conditional relative frequency

Answer 13

joint rf/row or column total

Question 14

marginal relative frequency

Answer 14

column or row/table total

Question 15

friequncy

Answer 15

number of things having each value

Question 16

center

Answer 16

mean-> x bar, sum of all values divided by # of values
median-> midpoint

Question 17

quantitative

Answer 17

number values, counts, measures

Question 18

box plot (5 point summary)

Answer 18

max, min, Q1, Q3, meadian

Question 19

invNorm formula

Answer 19

invNorm (area:__, µ:__, σ:__)

Question 20

68-95-99.7 rule

Answer 20

68%-> 1 above and 1 below mean
95%-> 2 above and 2 below mean
99.7%-> 3 above and 3 below mean

Question 21

chang with scale (x/÷)

Answer 21

ALL (mean, median, Q1, Q3, max, min, range, sd, IQR)

Question 22

normalcdf formula

Answer 22

normalcdf(lower:__, upper:__, µ:__, σ:__)