Who's above average?
Boolean arrays can be a very powerful way to subset arrays. In this exercise, you will identify the prices that are greater than average from a list of prices.
numpy is imported as np and the array prices is available in your workspace.
Deze oefening maakt deel uit van de cursus
Introduction to Python for Finance
Oefeninstructies
- Find elements in
pricesthat are greater thanprice_meanand assign the boolean result toboolean_array. - Subset
pricesusingboolean_arrayand assign the result toabove_avg.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Find the mean
price_mean = np.mean(prices)
# Create boolean array
boolean_array = (____)
print(boolean_array)
# Select prices that are greater than average
above_avg = prices[____]
print(above_avg)