��� = 42 n=42. Square root of 42 42 is approximately 6.48 6.48. Rounded to the nearest integer, we get 6 6. The range of the data is 73.5 − 45.1 = 28.4 73.5−45.1=28.4. Class width ≈ 28.4 6 ≈ 4.73 ≈ 6 28.4 ≈4.73.
��� = 42 n=42. Square root of 42 42 is approximately 6.48 6.48. Rounded to the nearest integer, we get 6 6. The range of the data is 73.5 − 45.1 = 28.4 73.5−45.1=28.4. Class width ≈ 28.4 6 ≈ 4.73 ≈ 6 28.4 ≈4.73.