Mean Median Mode O My!!!
Find the mode of this data... 0 , 1 , 2 , 3, 4, 5, 6, 7, 8, 9, 10
no mode
How do we label the horizontal axis of a histogram?
What measure of central tendency is the best representation when reporting income to sort them into levels?
median
In a spell test, some children in a class score 13, 17, 12, 19, 20, 13. What is the mean?
15.7
In a data set, what number appears most often?
What is the mode?
Find the median of the data... 14, 12, 10, 15, 18, 23, 19, 16
15.5
How do we label the vertical axis of a histogram?
frequency
Find the class width if we we want to divide the following data into 5 classes
47, 57, 60, 63, 64, 71, 82, 82
7
A man is washing windows on the 25th floor of an apartment building. Suddenly, he slips and falls. He has nothing to cushion his fall, and no safety equipment—but he doesn't get hurt. How is this possible?
He was washing the window from inside the building
In a data set, what number is in the middle?
What is the median?
Find the mean of the data.
x freq
8 5
10 3
11 2
13 6
10.625
What is the word describes a histogram with data concentrated to the left? (is it skewed left or right?)
skewed to the right
According to the grouped frequency distribution below, what is the class width?
Class Frequency
40-49 3
50-59 6
Class width= 10
(50-40=10)
A prisoner is forced to go into one of three rooms, but he can choose which room. The first room is ablaze with fire. The second one is rigged with explosives that will go off as soon as he enters. The third contains a pair of lions who haven't eaten in years. Which room should he choose to survive?
The third room—any lions who hadn't eaten in years would be dead!
In a data set, what number represents the "average?"
What is the mean?
What is the mean
classes frequency
20-30 5
30-40 4
40-50 6
35.7
What has to touch when you are creating a histogram?
the bars
Find the median of the data.
x freq
8 5
10 3
11 2
13 6
10.5
I have hundreds of wheels, but move, I do not.
Call me what I am: Call me a lot.
What am I?
A parking lot
Which measure of central tendency can there be none of in a set of numbers?
What is mode?
What is the median
classes frequency
20-30 5
30-40 4
40-50 6
36.25
What is the difference between histogram and bar graph?
Histogram is done on classes and and rectangles are stuck next to each other. Bar graph is done on discrete or qualitative data and bars are far from each other.
What is a frequency distribution?
A chart consisting of two columns: one with data values in increasing order, and the other indicating the frequency of each of those values.
Bonus
Bonus
The formula to find median in grouped data or classes
L + (n/2-Fb)/(fmed)*w