1. The return of investment earned by RFS Manufacturing Inc. for 6 successive years was: 25 percent, 18 percent, 30 percent, 35 percent, 20 percent and 25 percent. What is the geometric mean rate of return on investment? 2. The population of the City of Manila, in 1980 was 5 000 000, and in 2005 it was 12 500 000. What was the average annual percentage increase during this period.

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3. A performance evaluation for AUS Enterprise was administered to several departments, with mean and
sample sizes as follows. Calculate a combined mean for all departments.
Human Resource
Operations
* 91
N2 = 30
Security
= 86
Ny = 10
Accounting
X.= 84
X= 80
N =6
Na = 8
4. The cost of 12 models of mobile phones at a cellular specialty store during 2009 was as follows: P5 500, P10
200, P9 750, PG 800, P14 000, P12 000, P13 000, P23 000, P 12 900, P10 000, P11 000, P13 000.
5. A manufacturer of rechargeable batteries took a sample of 15 batteries from a day's production and used
them continuously until they were worn out. The number of recharged until failure were; 20, 45, 23, 21, 23 ,32
„34, 23, 23, 21, 21, 21, 22, 32, 32. Find the median.
6. Consider the sample 30, 46, 50, 44, 52, 53, 61, 48, 35, and 51. Find the midrange.
7. Consider the sample 87, 84, 76, 70, 76, 80, 63, 76, 39, 90, 76,77, and 80. Find the mode
Transcribed Image Text:3. A performance evaluation for AUS Enterprise was administered to several departments, with mean and sample sizes as follows. Calculate a combined mean for all departments. Human Resource Operations * 91 N2 = 30 Security = 86 Ny = 10 Accounting X.= 84 X= 80 N =6 Na = 8 4. The cost of 12 models of mobile phones at a cellular specialty store during 2009 was as follows: P5 500, P10 200, P9 750, PG 800, P14 000, P12 000, P13 000, P23 000, P 12 900, P10 000, P11 000, P13 000. 5. A manufacturer of rechargeable batteries took a sample of 15 batteries from a day's production and used them continuously until they were worn out. The number of recharged until failure were; 20, 45, 23, 21, 23 ,32 „34, 23, 23, 21, 21, 21, 22, 32, 32. Find the median. 6. Consider the sample 30, 46, 50, 44, 52, 53, 61, 48, 35, and 51. Find the midrange. 7. Consider the sample 87, 84, 76, 70, 76, 80, 63, 76, 39, 90, 76,77, and 80. Find the mode
1. The return of investment earned by RFS Manufacturing Inc. for 6 successive years was: 25 percent, 18
percent, 30 percent, 35 percent, 20 percent and 25 percent. What is the geometric mean rate of return on
investment?
2. The population of the City of Manila, in 1980 was 5 000 000, and in 2005 it was 12 500 000. What was the
average annual percentage increase during this period.
Transcribed Image Text:1. The return of investment earned by RFS Manufacturing Inc. for 6 successive years was: 25 percent, 18 percent, 30 percent, 35 percent, 20 percent and 25 percent. What is the geometric mean rate of return on investment? 2. The population of the City of Manila, in 1980 was 5 000 000, and in 2005 it was 12 500 000. What was the average annual percentage increase during this period.
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