You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "std_deviation", "description": "Calculates the standard deviation of a list of numbers.", "parameters": {"numbers": {"description": "The list of numbers.", "type": "List[float]"}}}, {"name": "neuronal_activity_rate", "description": "Calculates the neuronal activity rate based on the synaptic input rate, synaptic weight, and decay constant.", "parameters": {"synaptic_input_rate": {"description": "The rate of synaptic inputs per second.", "type": "int", "default": 1.0}, "synaptic_weight": {"description": "The weight of the synaptic input, denoting its influence. Defaults to 1.0.", "type": "float, optional", "default": 0.1}, "decay_constant": {"description": "The rate at which the neuron's potential decays. Defaults to 0.1.", "type": "float, optional", "default": 1.0}}}]
Find the standard deviation for the numbers: 12, 18, 24, 30, 36.
user
assistant
[{"name": "std_deviation", "arguments": {"numbers": [12, 18, 24, 30, 36]}}]