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Kristen studied the ages of patients who had strokes caused by stress. The ages of 30 patients who suffered stress strokes were as follows:

36	42	44	41	48
44	48	52	52	47
45	50	47	51	49
45	44	48	48	39
38	39	52	45	36
46	45	41	51	49

Use a grouping with the first class’ lower limit 30 and the class width of 10 to:

Create the frequency table:

Ages	Freq
$\displaystyle {30}\le{x}<{40}$	5
$\displaystyle {40}\le{x}<{50}$	19
$\displaystyle {50}\le{x}<{60}$	6

Ages	Freq
$\displaystyle {25}\le{x}<{30}$	0
$\displaystyle {30}\le{x}<{35}$	0
$\displaystyle {35}\le{x}<{40}$	5
$\displaystyle {40}\le{x}<{45}$	6
$\displaystyle {45}\le{x}<{50}$	13
$\displaystyle {50}\le{x}<{55}$	6

Ages	Freq
$\displaystyle {25}\le{x}<{35}$	0
$\displaystyle {35}\le{x}<{45}$	11
$\displaystyle {45}\le{x}<{55}$	19

Ages	Freq
$\displaystyle {30}\le{x}<{35}$	0
$\displaystyle {35}\le{x}<{40}$	5
$\displaystyle {40}\le{x}<{45}$	6
$\displaystyle {45}\le{x}<{50}$	13
$\displaystyle {50}\le{x}<{55}$	6

Ages	Freq
$\displaystyle {30}\le{x}<{40}$	7
$\displaystyle {40}\le{x}<{50}$	15
$\displaystyle {50}\le{x}<{60}$	8

Create the frequency histogram:

Identify the shape of the distribution of the data:

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