Triny Has Been Recording the Number of Times She Says

question 21

Multiple Choice

Triny has been recording the number of times she says "um" for the last 7 days to help improve her public-speaking grade. She recorded the following data for the last 7 days: 23, 27, 12, 10, 5, 5, 5. What is the approximate average number of times she says "um" over the 7-day period?

• A) 12
• B) 15
• C) 17
• D) 22

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Definitions:

Urea

Main nitrogenous waste of terrestrial amphibians and most mammals.

Creatinine

A waste product produced by muscles from the breakdown of a compound called creatine, commonly measured in blood or urine tests as an indicator of kidney function.

Tubular Reabsorption

Movement of primarily nutrient molecules and water from the contents of the nephron into blood at the proximal convoluted tubule.

Peritubular Capillary Network

A network of tiny blood vessels that surround the tubules in the kidneys, involved in reabsorption and secretion.