Question 1: The Stem and Leaf output that corresponds to a data set of test scores (marked out of 1000) is as follows:

Stem-and-leaf of TestScores N = (purposely deleted)

Leaf Unit = 10.0

6          2  133788

17        3  11456678899

(16)     4  0112444445566778

16        5  00055599

8          6  33458

3          7  27

1          8  1

A student in his term project last year concluded as follows:

i. 49 data points form this dataset.

ii. The data points in this data set range from 21 to 81 inclusive.

iii. The actual class interval containing the score '77' is 70 - 79.

iv. The median class is 40 - 48

v. The modal test score was 44

vi. The histogram of this dataset is symmetric.

Do you agree with the student? Where did this student go wrong? Justify your answer.