1) Construct a frequency distribution by taking the class interval of 5.

- Name the all Measurement Scales.

- In the following table the weights of 40 male students at State University are recorded to the nearest pound.

138,164,150,132,144,125,149,157,146,158,140,147,13 6,148,152,144,168,126,138,176,

163,119,154,165,146,173,142,147,135,153,140,135,16 1,145,135,142,150,156,145,128

2) Construct Stem and leaf display.

Question 2

a)A student’s final grade in Mathematics, Physics, English and hygiene are, respectively, 82, 86, 90 and 70. If the respective credits received for these courses are 3, 5, 3 and 1. Determine an appropriate average grade.

- b) The following table shows the frequency distribution of grades on a final examination in college algebra.
- Grades

GradesNo. of students

30-39 1

40-49 3

50-59 11

60-69 21

70-79 43

80-89 32

90-99 9

Find,

1) Mean

2) Mode