Bar Graphs and Dot Plots
Define Minimum and Maximum
Minimum : The Least Data value
Maximum: The Greatest Data value
Explain: How do you find the mean of a data set.
Add all the numbers together and divide by the amount of numbers in the data set.
The five number summary measures the
____, ______, _______, _______, _______
Min, Q1, Median, Q3, Max
The data for histograms must be ______ and ordered along the horizontal axis.
Numeric
Relative frequency graphs summarize data in ______.
Categories
________ A one-variable data display in which each value is represented by a dot above that value on a horizontal number line.
Dot Plot
Find the mode of the data set.
4, 17, 3, 8, 10, 12, 15, 3, 12, 17, 10, 3, 18, 5, 12, 11
The mode is 3 and 12
A ___ and ______ plot is a visual way to show a five-number summary.
Box-and-whisker plot
In stem-and leaf plots why is a Key necessary?
Key: interprets a stem plot which helps you read the information. (Acts like a clue).
Frequency graphs compare the number of a category to the total for ______ the categories.
ALL
Angelica has taken her pulse 11 times in the last six hours. Her results 69, 92, 64, 78, 80, 82, 86, 93, 75, 80, and 80bpm. Find the maximum, minimum, and range of the data.
Minimum: 64bpm
Maximum: 93bpm
Range: 29bpm
Find the mean median and mode for the data set.
12, 7, 11, 8, 6, 8, 9, 7, 7
6, 7, 7, 7, 8, 8, 9, 11, 12
Mean: 8.333
Median: 8
Mode: 7
What is the name of the difference between the maximum and minimum values in a five-number summary?
The range.
A one-variable data display which bars corresponds to an interval of data values; the height of a bar indicates the number, or frequency, of values in that interval.
Histogram
Relative frequency graphs show fractions or _____ not values.
Percents
________ is a collection of information, numbers, or pairs of numbers, usually measurements for real world solution.
Data
Find the median of the data set.
3, 10, 36, 255, 79, 24, 5, 8
3, 5, 8, 10, 24, 36, 79, 255
10+24=34/2=17
The median is 17
Find the five number summary of the data set.
5, 5, 8, 10, 14, 16, 22, 23, 32, 32, 37, 37, 44, 45, 50
Min: 5
Q1: 10
Median: 23
Q3: 37
Max: 50
Create a stem-and-leaf plot
34, 22, 27, 30, 17, 16, 35, 27 28, 19
Key: 1|7: _______
Stem: | Leaf
1 | 6 7 9
2 | 2 7 7 8
3 | 0 4 5
Key: 1|7: 17
A circle graph is also known as a ____ ______.
Pie chart.
Suppose you collect information on how each person in your class gets to school. What type of graph would you use to show the data? Explain your reasoning.
A Bar graph because information falls into categories.
Find the mean absolute deviation of the data set.
12, 13, 13, 15
12+13+13+15 / 4 = 13.25
|13.25-12|+|13.25-13|+|13.25-13|+|13.25-15|=3.4
3.4/4=0.88
Find the five number summary of the data set.
10, 15, 20, 22, 25, 30, 30, 33, 34, 36, 37, 41, 47, 50
Min: 10
Q1: 22
Median: 31.5
Q3: 37
Max: 50
True or false. To create a histogram we use a frequency table. Which has intervals, tally, and frequency?
True
A circle graph is a visual way of displaying data that is written in _______. The circle represents ____ %.
Percents \ 100%