67 75 63 71 65 73 71 88 61

67 56 62 58 72 66 76 77 75

61 70 64 71 63 61 63 64 62

69 60 66 78 94 64 64 69 64

65 75 72 67 88 74 65 73

78 62 68 69 67 57 65 58

Lowest number of lowest (bottom) interval?

(with approximately 8 class intervals of equal width)

I found the range of this data 94-56= 38

I am confused about what the lowest bottom interval is.

If its the lowest number would it just be 56?