Boots Women's Black Women's Onyx Boots Onyx Black Women's Black Boots Onyx Onyx 6Uqw4Rx

Women's Onyx Black Women's Boots Black Onyx Women's Boots Onyx Boots Black Onyx Collect the following:

• The score on the first probe (y₁)
• The score on the last probe (y₂)
• The first administration time period (x₁)
• The last administration time period (x₂)

Example:

• y₁ = 1
• y₂ = 14
• x₁ = 1
• x₂ = 8

Apply the following formula:

Example: