• 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
1) Construct a frequency distribution by taking the class interval of 5.
2) Construct Stem and leaf display.

Question 2

a)A studentís 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

  • Grades No. 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