Mathematics Magazine for Grades 1-12  

7/2004

The greatest sin is not to be filled with joy.
 - Rabbi Leveratov

Grade 6

Theory:

Statistical Mean

The statistical mean is commonly called the average:

To find the mean of a group of numbers:

Add the numbers together

Divide by how many numbers were added together

Statistical Range

The statistical range is the difference between the lowest and highest valued numbers in a set of numbers.

To find the range of a group of numbers:

Arrange the numbers in order by size

Subtract the smallest number from the largest number.

Statistical Mode

The statistical mode is the number that occurs most frequently in a set of numbers.

To find the mode of a group of numbers:

Arrange the numbers in order by size.

Determine the number of instances of each numerical value.

The numerical value that has the most instances is the mode.

There may be more than one mode when two or more numbers have an equal number of instances and this is also the maximum instances

A mode does not exist if no number has more than one instance.

Example: The mode of 2, 4, 5, 5, 5, 7, 8, 8, 9, 12 is 5.

Solutions from the Previous Issue:

Solve for each of the given problems. Write the answer in lowest terms.

1.       

Solution:

= = = =       

2.       

Solution:

= = = =

3.       

Solution:

= = = = =

4.       

Solution:

= =

Proposed Exercises:

Order the metric measurements from least to greatest.

1.        0.5 g;   10 cg;   0.0007 mg

2.        650 mL;   700 L;   10 cL

3.        51,040 L;   890 mL;   90 cL

4.        2,100 cm;   7.902 mm;   85.03 m