mean, median, mode, and range
Double Bar Graphs/Histograms
Stem and Leaf Plots
Line Plots
Frequency Table
100
How do we find the mode of any set of numbers?
We find the number or numbers that are most popular.
100
Look at the Double Bar Graph on the Graphs Document. Which sport tied for favorite between girls and boys?
Basketball
100
Look at the Stem-and-Leaf plot on the Graphs Document. How many students were asked about their pulse rate?
18 students
100
Look at the Line Plot on the Graphs Document. What is the mode of the data?
$4
100
Look at the Frequency Table on the Graphs Document. What is the mode of the data?
Score of B
200
How do we find the mean of any set of numbers?
We add up all the data and then divide by the number of pieces of data we have.
200
Look at the Histogram on the Graphs Document. How many students scored in the 77-85 range?
10 students
200
Look at the Stem-and-Leaf plot on the Graphs Document. What is the mode of the data?
68
200
Look at the Line Plot on the Graphs Document. How many students bought snacks?
8 students
200
Look at the Frequency Table on the Graphs Document. How many students took the test?
22 students
300
How do we find the range of any set of data? (2 answers)
We find the smallest to the largest number. We can also subtract the smallest from the largest.
300
Look at the Double Bar Graph on the Graphs Document. How many more boys were involved in the survey than girls?
6 more boys
300
Look at the Stem-and-Leaf plot on the Graphs Document. What is the range of data - use both ranges.
68 - 110 or 42
300
Look at the Line Plot on the Graphs Document. What is the range of the data? Use both ranges.
$1-$5 or $4
300
Look at the Frequency Table on the Graphs Document. How many more students got an A or B on the test than a C or D?
8 students
400
How do we find the median of any set of numbers?
Line up the numbers from least to greatest and then count in to the middle number.
400
Look at the Double Bar Graph on the Graphs Document. What is the range of girls who liked a particular sport?
2 - 14 or 12
400
Look at the Stem-and-Leaf plot on the Graphs Document. What is the median of the data?
76
400
Look at the Line Plot on the Graphs Document. What is the median of the data?
$3.50
400
What two kinds of data can a frequency table show? You must use both vocabulary words!
Categorical and Numerical
500
What do we do if there are two middle numbers (medians)?
Add the two middle numbers up and divide by 2.
500
Look at the Double Bar Graph on the Graphs Document. What is the mean amount of boys per sport?
40 / 4 = 10
500
Look at the Stem-and-Leaf plot on the Graphs Document. What is the mean of the data? :)
79.3 or 79
500
Look at the Line Plot on the Graphs Document. What is the mean of the data?
24 / 8 = $3
500
Look at the Frequency Table on the Graphs Document. If I said there were 25 kids that took the test, how many must have failed the test?
3 students
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