Respuesta :
Answer:
Currently, the standard deviation is 10, because on average the cards were $10 away from the mean.
Adding another card with value $25 would decrease the standard deviation because it is closer to the mean the the current standard deviation.
Step-by-step explanation:
Answer:
The current standard deviation is 10. (The cards were $10 away from the mean.)
But, adding the $25 card would decrease the standard deviation.