Grade 7 Statistics and Probability page 4
Name ______Date ______
Mathematics Grade 7
Classroom Assessments Based on Standards (MMP 7/06)
MPS Learning Targets: Statistics and Probability· Interpret and analyze data sets and displays using measures of central tendency and variation, and compare data sets to evaluate hypotheses and multiple representations.
· Design and conduct simulations to solve problems, determine likelihood and fairness of events, and make predictions and analyze outcomes based on theoretical and experimental probability.
Shoe Sizes
Males
/11, 10, 8, 7, 10, 8, 9, 7, 8, 8, 9, 12, 10, 10, 6, 9, 11
Females
/6, 6, 5, 7, 7, 5, 7, 6, 8, 5, 5, 6, 5, 7, 5, 6
1a.) Using the table above, create a stem and leaf plot or a double bar graph. Identify the
median of the data.
1b.) Discuss why you chose the plot or graph.
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1c.) Is the following hypothesis true or false?
“The boys feet are 1/3 larger than the girls.”
Answer______
Males Females
3 2 1 1 3 4
8 4 2 2 5
9 7 3 3 4 6 8
5 4 1 4 5 7
Ages of People
2.) Use the above stem & leaf plot above to answer the following questions. Make sure to label your answers.
A.) What is the range?______
B.) What is the mode?______
C.) What is the median?______
3.) What is the mean, median, mode, and range of the numbers listed? 4, 8, 3, 2, 5, 8, 12
Mean______
Median______
Mode______
Range______
4.) A box contains 3 chips labeled A,B, and C. One chip will be taken at random from
the box and then put back into the box. Then a second chip will be taken from the box and put back in the box. In the space provided below, using an array or a tree, list all the possible pairs of chips.
5.) The eight chips shown above are placed in a sack and then mixed up. Madeline
draws one chip from this sack. If each chip has the same chance of being picked, what
is the probability that Madeline draws a chip with an even number less than 5?
Answer______
6.) Julie and Andrea are going to play a game with spinners that are equally divided. The players take turns spinning, and get one point if the arrow lands on red, and two points if the arrow lands on yellow. After 10 turns, the player with the most points wins.
Julie’s Spinner Andrea’s Spinner
Is this a fair game? Why or why not?
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7.) Suppose 112 people take turns walking through the maze below.
A.) About how many people would you expect to end up in Room A? ______
B.) About how many people would you expect to end up in Room B? ______
C.) About how many people would you expect to end up in Room C? ______
Developed by the Milwaukee Mathematics Partnership (MMP) with support by the National Science Foundation under Grant No. 0314898.