The following represents litter sizes number of micelitter f

The following represents litter sizes (number of mice/litter) from different litters in a species of mouse (Peromyscus leucopus). 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, S, 5, 5, 5, 6, 6, 6, 7, 7 What type of data are these? Do these data satisfy the rule for the range of data? Construct a frequency distribution for these data? What is the sample size (n) for this sample? Calculate the mean for these data.

Solution

Answer

1. individual series

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2. range =highest - lowest = 7 - 1= 6

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3 frequency distribution table

Y

frequency

1

2

2

3

3

4

4

7

5

4

6

3

7

2

25

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4,. sample size =25

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5 .mean =sum/ number of items

1,1, 2,2,2, 3,3,3,3 4,4,4,4,4,4,4, 5,5,5,5, 6,6,6, 7,7

=100/25 =4 answer

Y	frequency
1	2
2	3
3	4
4	7
5	4
6	3
7	2
	25