"Question 1 The following graph shows the temperature of a patient in a hospital, recorded every hour. (a) What was the patient’s temperature at 1 p.m.? (b) When was the patient’s temperature 38.5°C? (c) The patient’s temperature was the same two times during the period given. What were these two times? (d) What was the temperature at 1.30 p.m? How did you arrive at your answer? (e) During which periods did the patient’s temperature show an upward trend?
Class 8 Introduction to Graphs Page 236"
Answers
Graphs are visual representations of data collected. In most cases, the data exists in the form of a table. In many cases, the table itself is displayed.
There are many different types of graphs.
a.Bar graph.
b.Pie graph or pie chart.
c.Line graph.
A linear graph is different from a line graph, in a linear graph, the rest of points on the graph line up in an orderly manner. A linear graph is a graph that consists of a single straight line segment graph obtained by joining the plotted points is a line. Such graphs are called linear graphs.
A line graph displays data that changes continuously over period of time. A line graph which is a whole unbroken line is called a linear graph. To draw such a line we need to locate some points on the graph sheet
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Solution:
(a) The patient’s temperature at 1 p.m. is 36.5°C
(b) The patient’s temperature 38.5° C happened at 12:00 Noon
(c) The patient’s temperature was the same at 1:00 PM and 2:00 PM
(d) The graph between 1 p.m & 2 p.m is line parallel to x-axis. So temperature at 1.30 p.m will be temperature at 1 p.m
(e) Patients temperature showed an upward trend from 10:00 to 11:00 AM and from 2:00 to 3:00 PM.
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Hope this will help you...
(a) At 1 p.m., the patient's temperature was 36.5°C. (b) The patient's temperature was 38.5°C at 12 noon.
(c) The patient's temperature was same at 1 p.m. and 2 p.m.
(d) The graph between the times 1 p.m. and 2 p.m. is parallel to the x-axis. The temperature at 1pm. and 2 p.m. is 36.5°C. So, the temperature at 1:30 p.m. is 36.5°C.
(e) During the following periods, the patient's temperature showed an upward trend.
9 a.m. to 10 a.m., 10 a.m. to 11 a.m., 2 p.m. to 3 p.m.