A student randomly draws a card from a standard deck of 52 cards. He records the type of card drawn and places it back in the deck. This is repeated 20 times. The table below shows the frequency of each outcome.

Outcome Frequency
Heart 7
Spade 3
Club 6
Diamond 4

Determine the experimental probability of drawing a diamond.
0.13
0.20
0.35
0.70

The experimental probability of drawing a diamond is found by dividing the frequency of drawing a diamond by the total number of trials.

The frequency of drawing a diamond is 4, and the total number of trials is 20.

So, the experimental probability of drawing a diamond is 4/20, which simplifies to 1/5 or 0.20.

Therefore, the answer is 0.20.