RANDOM VARIABLES + FDT Flashcards
measures the extent to which data is dispersed / spread out
measures of dispersion
measure of asymmetry of a distribution
skewness
used for ORDINAL data
quartile deviation
amount of spread between:
1. 1st Quartile and Median
OR
2. Median and 3rd Quartile
quartile deviation
average of absolute values
Mean Absolute Deviation
If MAD is small, scores are _____
close
If MAD is big, scores are _____
scattered
_x
mean
N
total number of data / population size
low standard deviation -
close
high standard deviation -
spread
2 sets of data may have same measures of central tendency BUT must have different variations
TRUE
i
class range
the modal class is the class with __________
highest frequency
a collection of all possible events
sample space
denoted by letter āSā
sample space
elements in sample space
sample points
ranvar associated with numerical values / set of possible outcomes
discrete random variable
ranvar where values are in a continuous scale
continuous random variable
ranvar where values can be non-integers
continuous random variable
weight of 11 - Fermat students
continuous random variable
average monthly income of Sir Cueto
continuous random variable
percentage of students that passed the Long Test 3
continuous random variable
number of 11 - Fermat students
discrete random variable
price of a Madame Web ticket
discrete random variable
number of defective light bulbs in a box of 10
discrete random variable
result of rolling a die
discrete random variable
income
continuous random variable
allowance / day of a college student
continuous random variable
number of emails received in a day
discrete random variable
passenger capacity
discrete random variable
monthly electric consumption
continuous random variable
number of tourist spots
discrete random variable
likelihood of event based on MATHEMATICAL REASONING
theoretical probability
likelihood of event based on REPEATED EXPERIMENTS
experimental / observation / empirical probability
The probability of each event in the sample space must be ___
between / equal to 0 / 1
The sum of probabilities must be ___
equal to 1
countable / whole numbers only
discrete random variable
