Question

The following data represent the battery​ life, in​ shots, for a sample of 12 three pixel digital cameras. Complete parts​ (a) through​ (d).

330 180 50 170 370 440 290 40 350 140 120 290330 180 50 170 370 440 290 40 350 140 120 290 

a. Put in ordered array

b. Construct stem and leaf display

c .Does the order array or the stem and leaf diagram display more information?

d. Where is the battery life concentrated?

between 0-100

between 100-200

between 200-300

between 300-400

Answer 1

It is given that, life of battey as below: 330,180,50,170,370,440,290,40,350,140,120,290,330,180,50,170,370,440,290,40,350,140,120,290

(a) In ordered array, the above data can be represented as, 40,40,50,50,120,120,140,140,170,170,180,180,290,290,290,290,330,330,350,350,370,370,440,440

(b) Stem and leaf plot of above data is given as,

Since, in a stem and leaf plot, in leaf there should be a single (right most) digit in the leaf column.

(c) The stem and leaf diagram display more information since stem and leaf diagram is a graphical techniques and it can explore more data as compared to ordered array.

(d) From the above stem and leaf plot, one can see that there are 4 battery whose life is 290 in shots.

Thus, one can say between 200-300, the battery life concentrated.