M5 M6 Formative Questions Flashcards
Data is a subset of the populations
false sample
A collection consists of the totality of the observations with which we are concerned
false population
Sampling comprises those methods concerned with collecting and describing a set of data so as to yield meaningful information
false descriptive stat
Deduction is the science of collecting, analyzing, and interpreting data
false statistics
sample is a type of data based on counts and measures
false numerical data
the highest height in the group is 192 cm.
descriptive statistics
the average height is 181 cm
descriptive stat
the average height of the group will continue to increase
inferential stat
from the last 3 members to join, it seems the next one will have a height of 179-182cm
inferential stat
15% of the budget is allocated for security
descriptive stat*
stock value is expected to decrease next week
inferential stat
the volume of production in plant 1 is greater than in plant 2
descriptive stat
study shows that 9 out of 10 doctors choose Safesoap
inferential stat
at least 5% of the fires reported last year in a certain city were deliberately set by arsonists
differential
as a result of a recent poll, most Americans are in favor of building additional nuclear power plants
inferential
as a result of recent cutbacks by oil-producing nations, we can expect the price of gasoline to double in the next year
inferential stat
of all patients who have received this particular type of drug at a local clinic, 60% later developed significant side effects
descriptive stat
Define a suitable population from which the following samples are selected:
20% of the purchases are under P500
all the purchases
5 out of 15 restaurants in the city are rated more than 3 stars
descriptive
looking at the trends, the number of cases will continue to decrease in the next 3 years
inferential stat
20% of the infected cases from last month were infected again
descriptive
based on the measures samples, the average volume of output will be around 328-333ml
inferential stat
Define a suitable population from which the following samples are selected
20 cases have 10% chance of not being resolved
all cases
define a suitable population from which the following samples are selected
a coin is tossed 100 times 34 tails are recorded
100 coin tosses
the frequency is the number of observations that belong in each class
true class freq
a histogram is the organization of raw data in table form, using classes and frequencies
false frequency distribution
cumulative frequencies are the smallest and highest data value that can be included in the class
false class limitations
the frequency polygon is a line graph showing the distribution of values of the observation using the frequencies and class marks
true
an ogive is the organization of raw data in table form, using classes and frequencies
false frequency distribution
class boundaries are numbers used to separate the classes so that there are no gaps in the frequency distribution
true
the frequency polygon is a bar graph showing the distribution of values of the observation using the frequencies and class boundaries
false histogram
the frequencies are used to show how many data values are accumulated up to and including a specific class
false cumulative frequency
the classes must be mutually exclusive or exhaustive
true
find the probability of getting a 7 from rolling a single die
0
