Theme: Measures of central tendency and position

1. Present a daily life situation where you have used one of the measures of central tendency.

2.Explain the concept of bias, related to the mean, mode, and median.

3. Will it help you to calculate the mean and median of a qualitative variable? Explain.

4. Using the data below, find the mean, mode, and median: 77, 98, 87, 111, 95, 93, 88, 90, 62, 71, 99.

5. Find the first and third quartiles for the temperatures for a week in the summer of last year, expressed in degrees Fahrenheit: 96, 94, 93, 88, 97, 96, 87.

6. Below is a frequency table. Find the mean, mode, and median.

Lmit	Frecuency (f)
110-115	25
116-121	22
122-127	14
128-133	20
134-139	9
140-145	26
146-151	10

7. Below are the weight data (pounds) for a group of babies born at the Auxilio Mutuo Hospital last month: 5.8, 6.0, 7.3, 8.1, 6.4, 7.3, 7.1, 6.9, 5.1, 7.2, 6.1, 5.8, 5.7, 6.4, 7.3, 7.0, 7.3, 6.2, 4.8, 5.1, 6.9. Calculate the following values:

• media
• mode
• median
• average course
• median axis
• Q1
• Q3
• P47
• P94

8. With the data below, prepare a boxplot (summary of five (5) numbers): 114, 90, 123, 98, 78,78, 89, 91, 69, 85, 99, 111, 77, 83 , 71, 69, 93.