The San Diego Union Tribune reported that the 30- year fixed-rate mortgage rates had risen to an average of 5.74%. A sample of mortgage rates in the San Diego area produced the following interest rates:

5.84	5.73	5.58	5.69	5.84	5.68	5.73
5.79	5.77	5.67	5.76	5.70	5.70	5.66
5.71	5.80	5.81	5.75	5.81	5.78	5.79
5.77	5.73	5.67	5.74	5.76	5.76	5.74
5.73	5.71	5.71	5.72	5.80	5.69	5.88
5.70	5.75	5.75	5.68	5.72	5.70	5.67
5.83	5.76	5.80

1. Construct a histogram with eight classes beginning at 5.58.
2. Determine the proportion of mortgage rates that are at least 5.74%.
3. Generate an ogive for this data.