RANDOM VARIABLES + FDT

Question 1

measures the extent to which data is dispersed / spread out

Answer 1

measures of dispersion

Question 2

measure of asymmetry of a distribution

Answer 2

skewness

Question 3

used for ORDINAL data

Answer 3

quartile deviation

Question 4

amount of spread between:
1. 1st Quartile and Median
OR
2. Median and 3rd Quartile

Answer 4

quartile deviation

Question 5

average of absolute values

Answer 5

Mean Absolute Deviation

Question 6

If MAD is small, scores are _____

Answer 6

close

Question 7

If MAD is big, scores are _____

Answer 7

scattered

Question 8

_x

Answer 8

mean

Question 9

N

Answer 9

total number of data / population size

Question 10

low standard deviation -

Answer 10

close

Question 11

high standard deviation -

Answer 11

spread

Question 12

2 sets of data may have same measures of central tendency BUT must have different variations

Answer 12

TRUE

Question 13

i

Answer 13

class range

Question 14

the modal class is the class with __________

Answer 14

highest frequency

Question 15

a collection of all possible events

Answer 15

sample space

Question 16

denoted by letter “S”

Answer 16

sample space

Question 17

elements in sample space

Answer 17

sample points

Question 18

ranvar associated with numerical values / set of possible outcomes

Answer 18

discrete random variable

Question 19

ranvar where values are in a continuous scale

Answer 19

continuous random variable

Question 20

ranvar where values can be non-integers

Answer 20

continuous random variable

Question 21

weight of 11 - Fermat students

Answer 21

continuous random variable

Question 22

average monthly income of Sir Cueto

Answer 22

continuous random variable

Question 23

percentage of students that passed the Long Test 3

Answer 23

continuous random variable

Question 24

number of 11 - Fermat students

Answer 24

discrete random variable

Question 25

price of a Madame Web ticket

Answer 25

discrete random variable

Question 26

number of defective light bulbs in a box of 10

Answer 26

discrete random variable

Question 27

result of rolling a die

Answer 27

discrete random variable

Question 28

income

Answer 28

continuous random variable

Question 29

allowance / day of a college student

Answer 29

continuous random variable

Question 30

number of emails received in a day

Answer 30

discrete random variable

Question 31

passenger capacity

Answer 31

discrete random variable

Question 32

monthly electric consumption

Answer 32

continuous random variable

Question 33

number of tourist spots

Answer 33

discrete random variable

Question 34

likelihood of event based on MATHEMATICAL REASONING

Answer 34

theoretical probability

Question 35

likelihood of event based on REPEATED EXPERIMENTS

Answer 35

experimental / observation / empirical probability

Question 36

The probability of each event in the sample space must be ___

Answer 36

between / equal to 0 / 1

Question 37

The sum of probabilities must be ___

Answer 37

equal to 1

Question 38

countable / whole numbers only

Answer 38

discrete random variable