12-2: TEKS Practice

  • 1. The mean of the data set shown in the dot plot is 3. What is the deviation of 7?

    A dot plot.

  • 2. During the summer, Marissa walks dogs to earn extra money. The dot plot shows the number of dogs she walked per day for the last 11 days. The mean number of dogs walked is 2. Marissa plans to walk 5 dogs tomorrow. What is the deviation of 5?

    A dot plot.

  • 3. The mean of the data set is 3. Find the absolute deviation of 1.

    A dot plot.

  • 4. The mean of the data set is 3. Find the absolute deviation of each of the light gray data values.

    A dot plot.

    • a. The absolute deviation of 1 is ▪.

    • b. The absolute deviation of 2 is ▪.

    • c. The absolute deviation of 5 is ▪.

  • 5. You measure the temperature on the first day of the month for six months. What is the mean absolute deviation of the temperatures?

  • 6. Error Analysis The mean of the data set shown in the dot plot is 4. Your friend says that the deviation of 7 is −3.

    A dot plot.

    • a. What is the correct deviation?

    • b. What mistake might your friend have made?

      • A. Your friend counted the jumps in the wrong direction.

      • B. Your friend counted the jumps from 0, not from the mean.

      • C. Your friend counted the jumps incorrectly.

      • D. Your friend counted the jumps from 8, not from the mean.

  • 7. You ask 8 classmates how many pencils they have in their bags. The mean is 8 pencils. Calculate the mean absolute deviation for the number of pencils.

    A dot plot.


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Table of Contents

Digits, Grade 8, Volume 2, Homework Helper Unit D: Two-Dimensional Shapes Unit E: Measurement and Data Unit F: Personal Financial Literacy Unit G: Step-Up Lessons English/Spanish Glossary Formulas Math Symbols Formulas Measures Properties