1. You are the manager of a fast food store. Part of your job is to report which special is selling best to the boss at the end of each day. Use your knowledge of descriptive statistics and write one paragraph to let the boss know what happened today. Use the following data.
|
Special number
|
Sold
|
Cost
|
|
Huge Burger
|
20
|
$2.95
|
|
Baby Burger
|
18
|
$1.49
|
|
Chicken Littles
|
25
|
$3.50
|
|
Porker Burger
|
19
|
$2.95
|
|
Yummy Burger
|
17
|
$1.99
|
|
Coney Dog
|
20
|
$1.99
|
|
Total specials sold
|
119
|
|
2. Suppose you are working with a data set that has some different (much larger or much smaller than the rest of the data) scores. What measure of central tendency (mean, median or mode) would you use and why?
3. Identify whether these distributions are negatively skewed, positively skewed, or not skewed at all and why.
a. This talented group of athletes scored very high on the vertical jump task.
b. On this incredibly crummy test, everyone received the same score.
c. On the most difficult spelling test of the year, the third graders wept as the scores were delivered.
4. For each of the following, indicate whether you would use a pie, line, or bar chart, and why.
a. The proportion of freshmen, sophomores, juniors, and seniors in a particular university
b. Change in GPA over four semesters
c. Number of applicants for four different jobs
d. Reaction time to different stimuli
e. Number of scores in each of 10 categories