Statistical vs Non and histogram
How many countries are there in Europe?
non-statistical
what do we find the mean of a data set
add up all of the numbers in the data set and divide by how many numbers their are in the data set
Can we use a histogram to find the mean, median, or mode? If no what can we use?
Dot Plot
how do you find the range of a data set
the maximum minus the minimum
how do we find the absolute mean deviation of a data set?
Find the mean of the data set and subtract the mean from each number and find the absolute value. Then, add up all of the absolute values and divide by how many numbers are in the data set.
Joss recorded the heights of her friends in the table below. Friend Height (in inches)
Hayden 62, Diane 66, Kristina 68, Molly 64, Sam 53 Alexis 71
what is the mode of the data set
Which of the following is a statistical question?
A. What kind of pet do you have?
B. What is the age of each student in your school?
C. What was your highest test score this month?
D. What is the name of each student in your class?
B. What is the age of each student in your school
The table shows the quiz scores for the students in a study group. Find the mean for the data set.
Quiz Scores (points) 17 20 15 18 19
17.8
The data set is been organized from least to greatest. What is the minimum and maximum of the data set
3, 3, 4, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 9, 9, 9, 9, 10, 10, 11, 12
Min: 3
Max: 12
True or false ( use dot plot number of hours on board)
There are clusters from 3 to 5 and from 8 to 10.
There is a gap from 6 to 7.
There are extreme values in the data.
The data have no mode.
true
true
false
false
The histogram below shows the ages of the teachers at Maple Grove Middle School. How many more teachers were between the ages 30 and 49 than were between the ages 50 and 69?
8
The table shows the quiz scores for the students in a study group. Find the mean absolute deviation for the data set. Show your work.
Quiz Scores (points) 17 20 15 18 19
1.44
The data set has been organized from least to greatest. What is the first quartile (lower quartile) and the third quartile (upper quartile)
3, 3, 4, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 9, 9, 9, 9, 10, 10, 11, 12
First: 5.5
Third: 9
The box plots show the distribution of canned goods collected by students in the sixth and seventh grades during a food drive. Select True or False for each statement.
The data set for the sixth graders has a smaller range than the data set for the seventh graders.
The data set for the seventh graders has a smaller interquartile range than the data set for the sixth graders.
false
true
What is the mean absolute deviation of the data set below? 17, 9, 20, 7, 12
4.4
Martin has scored an average of 12 points per game this season. The table below shows how many points he has scored in each game. Write an equation that can be used to find how many points Martin scored in Game 5. Then solve the equation.
Game 1 2 3 4 5
Points Scored 8 11 12 16 n
n=13
Martin scored 13 points in Game 5
Elena researched the amount of food recommended for her 22-pound senior dog. She displayed the data in a dot plot.
what is the range of the dot plot
see the board
Range 1/4