Chapter 2 Part II Flashcards
1
Q
“n=”
A
number of observations
2
Q
How to find # of classes?
A
“2^k rule”
3
Q
How do you find the class interval?
A
write the formula
4
Q
What do you do with “I”?
A
…….
5
Q
To Convert a frequency distribution to a relative frequency distribution,
A
each of the class frequencies is divided by the total number of observations
6
Q
How to do a relative frequency distribution?
A
the frequency/ the # of observations
7
Q
How to find midpoint?
A
upper limit + lower limit/2
8
Q
Can you create another column for midpoint
A
YES!!!
9
Q
What is the x coordinate for a frequency polygon? and the Y coordinates?
A
the midpoint
-are the frequencies
10
Q
What do you do if a histogram doesn’t start at zero?
A
-do a break
