2. Frequency distribution tables Aa Aa The pocket mouse, found in western North

Question

2. Frequency distribution tables Aa Aa The pocket mouse, found in western North America and as far south as northern South America, is well adapted to life in the desert. It can live for long periods without water by utilizing the moisture available from tood· The pocket mouse gets its name from the fur-lined cheek pouches in which it carries its food A researcher is studying spatial memory in pocket mice by running the mice through a radial arm maze designed to measure spatial learning and memory. Each mouse's score is equivalent to the number of arms of the radial arm maze it investigates. A higher score indicates a mouse that is more curious and therefore more spatially intelligent. Figure 1: A radial arm maze Lynn Talton, 2008. Reprinted by permission from the UCLA Behavioral Testing Core Facility. Website: http://btc.bol.ucla.edu/ram.htm On the first day, the researcher runs a sample of 10 pocket mice, which receive the following scores: 6 7 5 76 4 8 78 7 Fill in the missing values in the following frequency table Table 1: Scores of Pocket Mice fX Total Arms Investigated Arms Investigated Number of Mice

Explanation / Answer

Missing values:

The number of dear mice were used in the second experiment is 5+8+6+4+2 = 25
Correct answer: Option (A) 25
Symbol:
Correct answer: Option (c) n
Summation X refers to
Correct answer: Option (c) The Sum of the scores obtained all mice that investated a paritucalar number of arms

Pocket Mice : 30
Dear Mice : 30

Correct answer: NO

X f fx 4 1 4 5 1 5 6 2 12 7 4 28 8 2 16 sum(fx) 65

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