Applied Maths MCQ

What is the difference between a bar chart and a histogram ?
(a) A histogram does not show the entire range of scores in a distribution.
(b) Bar chart are circular, whereas histogram are square.
(c) There are no gap between the bars on histogram.
(d) Bar charts represent numbers, whereas histogram represent percentages.

Which of the following is an example of raw-data:
(a) Original swath files generated from a sonar system
(b) Initial time-series file of temperature values
(c) A real time GPS encoded navigation file
(d) All of the above

A researcher wants to determine whether the circadian temperature cycle is less stable for older compared to middle aged adults. Body temperature in degrees fahrenheit is measured every 15 minutes over a period of 3 days. Choose the appropriate scale of measurement

Children in elementary school are evaluated and classified as non-readers (0), beginning readers (1), grade level readers (3). The classified is done in order to place them in reading groups. Choose the appropriate scale of measurement.