Study Guide – M7D1 - Data
Create a frequency table from the following data:
95, 75, 60, 85, 95, 70, 65, 60,
90, 75, 95, 90, 80, 95, 70
What is the median?
What is the mean?
115, 120, 140, 140, and 235.
Which central tendency is greater?
(calculate each of them to find out)
Mean Median Mode All are equal
27, 23, 1, 19, 41, 20, 35, 15, 18, 13
What is the range of the data?
What is the interquartile range?
5 8 12 14 20
What percent of the time is under 14?
What percent of the time is over 12?
What is the interquartile range?
What is the range?
What percent does the box represent?
27, 23, 1, 19, 41, 20, 35, 15, 18, 13
Make a box and whisker using the data above.
What is the:
Minimum value (LE)_____ Median______
Lower Quartile____ Maximum Value(UE)__
Upper Quartile_____ Range_____ Interquartile Range____
Compare the two box-n-whiskers.
A
B
Which one has a greater median?
Which one has a more predicatable data?
What type of graph compares two sets of data?
In a Positive Correlation,
When x increases, what does y do?
In a Negative Correlation,
When x increase, what does y do?
In a graph with No Correlation,
When x increase, what does y do?
Graph the following points and tell what type of relationship x and y have (positive, negative, or no correlation).
(10, 1) (5, 5) (2, 7) (3, 5) (4, 7)
(2, 8) (6, 4) (7, 2)
A cereal company wants to find out which cereal people like best. Which would be a good nonbiased sample survey.
a) asking every customer
b) asking every child
c) asking every 7th customer
d) asking the first 100 people
The cereal company wants to find out what people the public thinks of the new name of the cereal. What is the best way for them to get a random sample?
a) call the customers on their costumer list
b) call all the people whose last names start with B
c) call random numbers in the phone book
d) call their employees