zMath 130  - Unit 28: Mode of Data Set

Mode of Data Set

For questions 1–  4, select the mode for the following sets of numbers.


1)

52, 52, 55, 55, 55, 57, 57, 57, 57, 57, 57, 59, 59


2)

1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 7, 7, 8, 8


3)

$5, $5, $5, $7, $8, $9, $10, $10, $10, $10, $10


4)

101, 102, 102, 102, 103, 103, 104, 104, 105, 105


5)

Mary was playing a game with dice. She rolled the dice 10 times to see what numbers she would roll. Mary rolled these numbers:  9, 3, 12, 6, 2, 12, 4, 10, 12, 8. What is the mode or the number that she rolled the most?


6)

How many times did Mary roll the mode?


7)

Mary then played the same game with a spinner. After ten spins, her results were as follows: 5, 2, 6, 5, 1, 5, 6, 4, 4, 3. What is the mode of these numbers?


8)

How many times did the spinner point to the mode?


9)

What is the mode for the numbers 7, 6, 5, 8, 7, 5, 9, 3, 5, and 4?


10)

What is the mode for the numbers 7, 6, 5, 8, 7, 5, 9, 3, 5, and 7?


11)

The Lakers scored the following numbers of goals in their last twenty matches:  3, 0, 1, 5, 4, 3, 2, 6, 4, 2, 3, 3, 0, 7, 1, 1, 2, 3, 4, 3

Which number had the highest frequency?


12)

Which letter occurs the most frequently in the following sentence?

                   THE SUN ALWAYS SETS IN THE WEST.


13)

Pi is a special number that is used to find the area of a circle. The following number gives the first 100 digits of the number pi:

3.141 592 653 589 793 238 462 643 383 279 502 884 197 169 399 375 105 820 974 944 592 307 816 406 286 208 998 628 034 825 342 117 067

Which of the digits 0 to 9 occurs most frequently in this number?


Using a Table to Organize Data


14)

Third graders are filling candy bags for the school picnic. The table below shows the number of bags they fill each hour. What is the mode for this table?


15)

What is the total number of bags that they filled?


This frequency chart shows the third graders favorite lunch. Use this chart to solve questions 16 and 17.


16)

What is the mode of these numbers?


17)

How many times was this number used to represent the students’ votes?


This chart shows the kinds of pets that Mrs. Miller's students have. Use this chart to solve questions 18 – 20.


18)

Which number is the mode?


19)

How many students in Mrs. Miller’s class owned pets?


20)

How many students did not own pets?


This chart shows the number of students that Mr. Rizor has in each of his seven classes throughout the day. Use this chart to solve questions 21 and 22.


21)

What is the mode of this set of numbers?


22)

How many students does Mr. Rizor have during the day?


Probability

For questions 23 – 29, you are going to select the probability of picking certain colored stars from the given container. Choose the correct answer.


23)

What is the probability of selecting a red star?

Click here to view the container of stars.


24)

What is the probability of selecting a blue star?

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25)

What is the probability of selecting a green star?

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26)

What is the probability of selecting an orange star?

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27)

What is the probability of selecting a yellow star?

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28)

The stars are placed in a closed container and you are going to pick 10 times. You will probably pick mostly which color star?

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29)

Which statement is true about the probability of the stars?

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The spinner will be used for the questions 30 – 32.


30)

If you were to spin this spinner, you would probably land on which color?

Click here to view the spinners.


31)

What color would you least likely land on?

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32)

Which two colors on the spinner are the exact same size?

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Refer to the pictograph to answer questions 33 and 34.


33)

Which class collected the most cans?


34)

How many cans were collected in all three classes?


35)

What is the probability of selecting a red car?


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