Chapter 1
(Blank) are the values that the variables can assume.
What is DATA?
There are the two types of frequency distribution.
What is categorical frequency distribution and grouped frequency distribution
Calculate the mean of the following numbers: 32, 14, 11, 58, 20, 26, 37
What is 28.29 (198/7=28.29)
This type of diagram is used to find the sample space of large samples.
What is a TREE DIAGRAM
In this type of study, the researcher manipulates one of the variables and tries to determine how the manipulation influences other variables.
What is an Experimental Study
Draw a diagram representing: Sample vs Population
Sample shape within Population shape
This type of graph displays data by using continuous vertical bars of various heights to represent the frequencies of the classes.
What is a HISTOGRAM
Q3 minus (-) Q1 is the formal for this measure of spread.
What is IQR
This is the formula for classical probability.
What is P(E) = n(E)/n(S)
where P(E) = probability of event
n(E) = number of outcomes
n(s) = total number of outcomes in sample space
Calculate the standard deviation of a sample which has a variance of 63
sqrt of 63 = 7.937
This type of variable is the one being manipulated by the researcher.
What is INDEPENDENT VARIABLE
These are the five attributes associated with class in a frequency distribution table.
What is 1. lower class limit 2. upper class limit 3. class boundaries 4. class width 5. class midpoint
These are required in a five-number summary.
What is 1. lowest value 2. Q1, 3. Q2 = median, 4. Q3, 5. highest value
List the two (2) conditions for a probability test.
What is 0 less than or equal to P(E) less than or equal to 1 and sum of P(E) = 1
Draw the empirical curve and label the three block percentages.
These are the four (4) main types of variables.
What is QUALITATIVE, QUANTITATIVE, CONTINOUS, and DISCRETE
Draw a time series graph on the board. Label your X and Y axis
y axis = frequency
x axis = units of time
These are the four (4) measurements of central tendency.
What is MEAN, MEDIAN, MODE, and MIDRANGE
Name one of the two probability addition rules.
a. P(A or B) = P(A) + P(B) aka mutually exclusive
b. P(A or B) = P(A) + P(B) - P(A and B) aka not mutually exclusive
Draw a tree graph showing the possible outcomes if a coin flipped three times.
{HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}
Give the definition of either a systemic sample or a stratified sample. Double points if you can do both.
Systemic sample: a sample obtained by selecting the kth member of a population where k is a counting number.
Stratified sample: a sample obtained by dividing the population in subgroups (or strata) according to some characteristic relevant to the study; then subjects are selected from the subgroups
List the six (6) frequency distribution rules:
What is
a. 5-20 classes; b. class width should be odd; c. classes must be mutually exclusive; d. classes must be continuous; e. classes must be exhaustive; f. classes must be equal in width
Draw where the mean, median, and mode are on a right skewed distribution curve.
from left to right: mode, median, mean
Name one of the multiplication rules for probability.
P(A and B) = P(A) x P(B) aka independent
P(A and B) = P(A) x P(B/A) aka dependent
This is the formula for a combination where order does not matter.
What is nCr = (n!)/ ((n-r)! x r!)