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The data below represents students’ test scores. Which of the following is the median of the set data? 11, 12, 18, 14, 22, 17, 17, 12, 26, 12, 13

A. 15

B. 12

C. 14

D. 15.8

Answer Explanation:

the median of a data set is the element that is found on the middle position. It is found by organizing the elements from the smallest to largest.

The data set above arranged from the smallest to largest is:

11, 12, 12, 12, 13, 14, 17, 17, 18, 22, 26

The number of elements is odd and the median is found in the (N+1)/2 th position. Here N=11, and the median falls in (11+1)/2=12/2=6 th position.

The element 14 falls in the 6th position, which is our median of the given data set.

Therefore, the Correct Answer is C.

More Questions on TEAS 7 Math

  • Q #1: 2(4x+3)=7x+5 Solve the equation above for x. Which of the following is correct?

    A. 1

    B. 2

    C. -1

    D. 11

    Answer Explanation

    we follow the order operations to solve for the unknown value of x.

    2(4x+3)=7x+5

    Open the bracket on the LHS by multiplying each term by 2

    (2*4x)+(2*3)=7x+5

    8x+6=7x+5

    Subtract 6 from both sides

    8x+6-6=7x+5-6

    8x=7x-1

    Subtract 7x on both sides

    8x-7x=7x-7x-1

    X=-1

    Thus, the value of unknown value of x is -1.

  • Q #2: A farmer grows apple, orange, lemon, banana, and pear trees. The number of trees planted this year is shown in table above. Which of the following would best display the data? Tree type Apple Orange Lemon Banana Pear Number of trees 20 10 12 25 21

    A. Bar graph

    B. Stem and leaf plot

    C. Line graph

    D. Scatter plot

    Answer Explanation

    Based on the above data, the horizontal axis will be tree type and vertical axis will represent the number of trees.

    Based on these, a bar graph is appropriate to represent the number trees.

  • Q #3: 2.50*0.25 Simplify the expression above. Which of the following is correct?

    A. 0.0625

    B. 6.025

    C. 0.625

    D. 6.25

    Answer Explanation

    To solve this equation, we use a calculator and find the product as:

    2.50*0.25=0.625