Calculate the Mean and Standard Deviation for the Results Below

question 21

Multiple Choice

Calculate the mean and standard deviation for the results below for the concentration of lead in a soil sample. 23.2 ppm,20.1 ppm,24.7 ppm,19.9 ppm,21.8 ppm

• A)21.9  3.4 (n = 5)ppm
• B)21.9  2.0 (n =5)ppm
• C)27.4  2.0 (n = 5)ppm
• D)22.0  1.8 (n = 5)ppm
• E)27.4  4.2 (n = 5)ppm

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Definitions:

Dreams-For-Survival

A theory suggesting that dreaming serves as a mechanism to process and rehearse ways to handle survival-related problems encountered while awake.

Sociocultural Theory

A theory of development that stresses the importance of social interaction and the cultural context in which people live and how these factors affect individual learning and behavior.

Operant Conditioning

A pedagogical strategy that aims to alter the robustness of a behavior by deploying either incentives or punitive measures.

Classical Conditioning

A type of learning in which a neutral stimulus comes to evoke a response after being paired with a stimulus that naturally brings about that response.