Discuss the below:
Q: According to the U.S. Department of Agriculture, ten to twenty earthworms percubic foot is a sign of healthy soil. Mr. Green checked the soil in his garden by digging 7 one-cubic-foot holes and counting the earthworms. He found thefollowing counts: 4, 23, 15, 10, 8, 12, 18.Calculate the sample variance and sample standard deviation of the numbersof earthworms per cubic foot.