The accompanying specific gravity values describe various wood types used in con

Question

The accompanying specific gravity values describe various wood types used in construction. 0.32 0.35 0.36 0.36 0.37 0.38 0.40 0.40 0.40 0.41 0.41 0.42 0.42 0.42 0.42 0.42 0.43 0.44 0.45 0.46 0.46 0.47 0.48 0.48 0.48 0.53 0.54 0.54 0.55 0.58 0.42 0.66 0.66 0.67 0.68 0.76 Construct a stem-and-leaf display using repeated stems. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Comment on any interesting features of the display. (Select all that apply.) The stem-and-leaf display shows that 0.45 is a good representative value for the data. The display is symmetric. The data value 0.76 is a possible outlier. The data value 0.32 is a possible outlier. There is a small amount of variation in the data. There is a reasonably large amount of variation in the data. The display is not symmetric and appears to be positively skewed. The stem-and-leaf display shows that 0.55 is a good representative value for the data.

Explanation / Answer

We have given that the accompanying specific gravity values describe various wood types used in construction.

We have given 36 data values.

And we have to construct stem and leaf plot of the data.

We can construct stem and leaf plot in MINITAB.

steps :

ENTER data into MINITAB sheet --> STAT --> EDA --> Stem and leaf --> Graph variables : select data column --> Click on trim outliers --> ok

————— 7/3/2017 4:16:49 AM ————————————————————

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Stem-and-Leaf Display: observation

Stem-and-leaf of observation N = 36
Leaf Unit = 0.010

1 3 2
6 3 56678
17 4 00112222234
(8) 4 55667888
11 5 144
8 5 58
6 6 2
5 6 6678

HI 76

Here we see that 0.76 is outlier.

The data is right skewed.

There is small amount if variation in data.

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