Statistics Write a program named statistics dva that repeatedly asks a user to enter a price of an item or-1 when finished. When the user enters -1, your program will compute and display the total number of items, the average price and the standard deviation of the prices. Here is the formula for standard deviation: 17(13--1) If the user enters -1 right away, print a message that you cannot calculate any statistics. If the user enters only one number, calculate the average, but give a message that you cannot calculate a standard deviation Here is some sample output from running the program several times Enter first price, or 1 to quit: 515.20 Enter next price, or 1 to quit: 316.45 Enter next price, or -1 to quit $17.00 Enter next pelce, or -1 to quit: $15.85 Enter next price, or 1 to quit: 3.1 Number of items: 4 Average price is $16.13 Standard deviation of prices is $0.78 Enter first price, or 1 to quit: $34 Enter next price, or -1 to quit: 5-1 Number of items: 1 Average price is $34:00 Cannot calculate standard deviation for one Item Enter first price, or 1 to quit: 3-1 Number of items: No data entered. Cannot calculate statistics When you print the average and standard deviation, they must be preceded by a dollar sign and have exactly two digits to the right of the decimal point. Here is how the sum of prices and sum of squared prices fit into the standard deviation formula, Hint: Your program needs variables to keep track of the number of items entered the sum of the items, and the sum of squares. Every time you get a price (other than-1). your program will have to add one to the total number of items, add the price to the sum, and add price to the sum of squares. Your program should not calculate the average or standard