MATH 3339 EXAM QUESTIONS AND ANSWERS 100% CORRECT

MATH 3339 EXAM QUESTIONS AND
ANSWERS 100% CORRECT
statistics - ANSWER-statistics is a collection of procedure and principles for
gathering data and analyzing information in order to help people make decisions
when faced uncertainty

Population Data - ANSWER-Everyone-Everything
Parameters-Summary measurement ( р,µ) of the population data

Parameters - ANSWER-Summary measurements of the population data ( р,µ)

p - ANSWER-population porportion

µ - ANSWER-population mean

Sample Data - ANSWER-smaller subset of population
Statistic- Summary of measurements denoted by standard letters (p̂̂ , X̅ ) of the
sample data

Sample Proportion - ANSWER-p̂̂

Sample mean - ANSWER-X̅

statistics - ANSWER-summary of measurements denoted by (p̂̂ , X̅ ) of the sample
dat

Types of variable - ANSWER-categorical/ quantitative

Categorical - ANSWER-groups of categories with no order
Ex.. eye color

Quantitative - ANSWER-Numerical values taken from an individual
ex..Weight

Types of quantitative - ANSWER-Discrete, Continuous

Discrete - ANSWER-Number of siblings, number of pockets in jeans, number of free
throws made in a season

Continuous - ANSWER-time, weight, height

pie chart for categorical data - ANSWER-

Dotplot for uni-variate quantitative data - ANSWER-

stem plot for quantitative data - ANSWER-

, histograms - univaria - ANSWER-

cumulative frequency distribution - ANSWER-shows the number of items with values
less than or equal to the upper limit of each class

cumulative relative frequency distribution - ANSWER-shows the proportion of items
with values less than or equal to the upper limit of each class

skewed right - ANSWER-

skewed left - ANSWER-

bimodal - ANSWER-

unimodal - ANSWER-

measures of location - ANSWER-Mean, Sample, mode

mean - ANSWER-not robust against extreme values. pulled away from the center of
the distribution toward the extreme value(tails of the graph)

median - ANSWER-resistant to extreme values (outliers) in data set

discrete random variable - ANSWER-is one that can assume a countable number of
possible values

continuous random variable - ANSWER-can assume any value in an interval on the
number line

Bernoulli Trial probability of success - ANSWER-p

Bernoulli Trial probability of failure - ANSWER-q=1-p

Binomial Experiment - ANSWER-there are fixed number of trials
can result in success or failure

Binomial distribution probability of success - ANSWER-p

binomial distribution number of trials - ANSWER-n

probability distribution table of X - ANSWER-all possible values of a discrete random
variable with their corresponding probabilities

mode - ANSWER-data that occurs the most

mean greater than median - ANSWER-skewed right

mean is less than the median - ANSWER-skewed left