Mathematics Reviewer

Determines the position of a single value in relation to other values in a sample or a population data set.

• Measures of Position

• Estimate of Position

Are the scores that divide a data set into four (4) equal parts.

• Quartiles

• Deciles

What is the percentage (%) of the distribution below the first/lower quartile?

• 10%

• 25%

What is the percentage (%) of the distribution below the second/middle quartile?

• 25%

• 50%

What is the percentage (%) of the distribution below the third/upper quartile?

• 60%

• 75%

When using Mendenhall and Sincich Method, what would be the formula when looking for the Q3’s position?

• Q3 = 3(n+1)/4

• Q3 = 1(n+3)/4

This is used when decimals are found in the positions.

• Linear Interpolation

• Linear Innerpolation

Are the scores that divide a data set into ten (10) equal parts.

• Quartiles

• Deciles

Are the scores that divide a data set into one hundred (100) qual parts.

• Deciles

• Percentiles

What is the relationship between the measures of position Q1 with Percentiles?

• Q1 = P10

• Q1 = P25