Question

2. A pet food company wants to know the number of pets owned by adults ages 21 to 70. The frequency table shows the data from a simple random sample of the targeted population.

Total pets owned 1 2 3 4 5 6 7
Number of adults 248 567 1402 728 419 456 203

What is the estimated mean for the population? Explain your answer and show your work.

Answer 1

526.857

Step-by-step explanation

Mean = (Σfx)/(Σf)

Σfx = 248 + 2(567) = 3(1402) + 4(728) + 5(419) + 6(456) + 7(208)

= 14,752

Σf = 1+2+3+4+5+6+7

= 28

Mean = (Σfx)/(Σf)

= 14,752/28

= 526.857

The estimated mean is the average of the data give. It is in form of a grouped data so I used to formula;

mean = (Σfx)/(Σf)