Corresponds to a data set of test scores

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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.

Reference no: EM131215266

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