STATISTICS

A researcher studying the behaviour of mice has recorded the time (in seconds) taken by each mouse to locate its food by considering 13 different mice as 31, 33, 63, 33, 28, 29, 33, 27, 27, 34, 35, 28, 32. Find the median time that mice spent in searching its food.

Median time spent by mice in searching it's food = 32

Arranging the time taken by the 13 mice in increasing order -

27,27,28,28,29,31,32,33,33,33,34,35,63

The total number of observations is 13(odd).

For odd number of observations the median is equal to the middle term of the observations.

Median time spent by the mice searching for food = 7th term = 32

Median time spent by mice in searching it's food = 32

Arranging the time taken by the 13 mice in increasing order -

27,27,28,28,29,31,32,33,33,33,34,35,63

The total number of observations is 13(odd).

For odd number of observations the median is equal to the middle term of the observations.

Median time spent by the mice searching for food = 7th term = 32

Step-by-step explanation:

∠cbe and ∠deb are same-side interior angles.

i took the test

this excerpt is taken from the book “we shall not be moved : the women’s factory strike of 1909 “ and is written by joan dash. it is the story of the great strike when almost 30thousand women working in factories in america formed a union to fight unsafe working conditions, long working hours and miserable wages.

question: which best states the author’s purpose for including this information in the text?

answer: to challenge the reader’s ideas about a historical event