import numpy as np
def calculate_mean_std(value_list):
    mean = np.mean(value_list)
    std = np.std(value_list, ddof=1)
    return "$" + f"{mean:.3f}_{{\pm{std:.3f}}}" + "$"
value_list = [0.366, 0.365, 0.364]
result = calculate_mean_std(value_list)
print(result)