check length for variance

def statistics(data):

    total_information = f"loss:{mean(data):.3f}"+u"\u00B1"+f"({stdev(data)/ (len(data)**0.5):.3f})"

    if len(data) < 2:

        std = 0

    else:

        std = stdev(data)

    total_information = f"loss:{mean(data):.3f}" + u"\u00B1" + f"({std/ (len(data) ** 0.5):.3f})"

    recent_data = data[-32:]

    recent_information = f"recent 32 loss:{mean(recent_data):.3f}"+u"\u00B1"+f"({stdev(recent_data)/ (len(recent_data)**0.5):.3f})"

    if len(recent_data) < 2:

        std = 0

    else:

        std = stdev(recent_data)

    recent_information = f"recent 32 loss:{mean(recent_data):.3f}" + u"\u00B1" + f"({std / (len(recent_data) ** 0.5):.3f})"

    return total_information, recent_information