Statistics

Touro College

Statistics, GSMN 261 Summer 2022

Quiz #1 Date 6/28/22

Instructor: Prof. Gregory Fishbein

Student Name: ------------------------------

1. Find the mean for the given sample data.

1, 5, 8, 12, 15, 19

2. Find the standard deviation for the above sample data. Round the answer to 1 decimal places

3. Find the median for the following samples

a) 5, 19, 27, 9, 30, 23, 15

b) 19, 27, 10, 28, 17, 40, 32, 25

_

4. Find the mean of the data summarized in the given frequency distributions, X. Round the answer to 2 decimal places.

Class limits	Class middle point Xi	Frequency fi	Xi ( fi
6 – 8		5
9 -11		2
12 – 14		4
15 – 17		1
		(fi =	(Xi ( fi =

_ (Xi ( fi

X = --------------- =

(fi