vocab
What does a frequency Distribution do?
lists each category of data and the number of occurrences for each category of data
Describe a time-series plot. What does the graph look like?
points on the graph with a line connecting the points. It measures variables at different points in time.
create a stem and leaf plot for the following
6,7,8,12,13,14,20,33,4,34,50,45,60,51,29,23,15
See the teacher
what number can't be expressed in Roman Numerals
0
What is relative frequency?
the proportion (or percent) of observations within a category and is found using
frequency/sum of all frequencies
what is the horizontal axis of a ogive graph?
upper class limits
what does it mean if a distribution is said to be skewed left?
most of the data is on the right side
10! seconds equals how many weeks
6 weeks
A bar graph represents what kind of data?
Qualitative data
What does cumulative mean?
increasing or increased in quantity,degree, or force by successive additions.
The categories by which data are grouped are called?
classes
from 0 to 100, what letter shows up once?
A
Pareto Chart is a bar graph whose bars do what?
go in decreasing order of frequency or relative frequency.
the cumulative relative frequency distribution displays as what?
proportion or percent
Define raw data in your own words
collected data
if you add up all the numbers from 1 to 100, what do you get
5050
Frequency polygons uses what for the horizontal axis?
the midpoint
stem-and leaf plots represent what kind of data?
quantitative data
In a relative frequency distribution, what should the relative frequencies add u to.
1
111,111,111 X 111,111,111 =
12,345,678,987,654,321