Yellowknife Steel manufactures a metal ring for industrial engines that usually has a mass of about 50 g. A random sample of 50 of these metal rings produced the following masses (in grams).

Construct a frequency distribution for these data using eight classes. What can you observe about the data from the frequency distribution?

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51 53 41 44 57 47 51 44 57 53 53 44 46 51 52 38 55 49 56 42 52 41 54 53 49 43 50 57 56 52 63 46 50 52 44 46 50 69 42 36 62 43 47 55 57 53 47 58 39 42