SaiBook.us SAT-2

Lesson Example Discussion Quiz: Class Homework

Quiz In Class

Title: One Variable Data

Grade: 1300-a Lesson: S4-L1

Explanation: Hello Students, time to practice and review. Let us take next 10-15 minutes to solve the ten problems using the Quiz Sheet. Then submit the quiz to get the score. This is a good exercise to check your understanding of the concepts.

Quiz: in Class

Problem Id	Problem	Options
1	For quality control, a company that manufactures lightbulbs conducted five different trials. In each trial, 500 different lightbulbs were tested. The bar graph above shows the number of defective lightbulbs found in each trial. What is the mean number of defective lightbulbs for the five trials? $1$	A) 4 B) 4.2 C) 4.6 D) 5
2	A group of students voted on five after-school activities. The bar graph shows the number of students who voted for each of the five activities. How many students chose activity 3 ? $2$	A) 25 B) 39 C) 48 D) 50
3	15, 14, 18, 17, and x. The mean and the median of the five numbers above are equal. Which of the following is NOT a possible value of x ?	A) 6 B) 11 C) 16 D) 21
4	Which of the following statements about the means and medians of data set A and data set B is true? $4$	A) Only the means are different B) Only the medians are different C) Both the means and the medians are different D) Neither the means nor the medians are different
5	The table shows the frequency of values in a data set. What is the minimum value of the data set? $5$	A) 20 B) 19 C) 22 D) 24
6	For which of the following data sets is the mean greater than the median?	A) 12, 15, 5, 6, 20, 18 and 23 B) 0, 10, 20, 30, 40, 50, 60, 70, and 80 C) 2, 4, 8, 16, 32, 64, 128, 256, and 512 D) 7, 107, 107, 207, 207, 207, 307, 307, and 307
7	In the table above, Melissa recorded the price of one gallon of regular gas from five different local gas stations on the same day. What is the median of the gas prices Melissa recorded? $7$	A) $3.68 B) $3.69 C) $3.70 D) $3.73
8	A data set of 27 different numbers has a mean of 33 and a median of 33. A new data set is created by adding 7 to each number in the original data set that is greater than the median and subtracting 7 from each number in the original data set that is less than the median. Which of the following measures does NOT have the same value in both the original and new data sets?	A) Median B) Mean C) Sum of the numbers D) Standard Deviation
9	20, 64, 8, 17, and x. The mean and the median of the five numbers above are equal. Which of the following is NOT a possible value of x ?	A) 23.65 B) 29.36 C) 27.25 D) 29.89
10	Data set A consists of the heights of 75 objects and has a mean of 25 meters. Data set B consists of the heights of 50 objects and has a mean of 65 meters. Data set C consists of the heights of the 125 objects from data sets A and B. What is the mean, in meters, of data set C?	A) 47 B) 45 C) 43 D) 41

Problem Id

Problem

Options

For quality control, a company that manufactures lightbulbs conducted five different trials. In each trial, 500 different lightbulbs were tested. The bar graph above shows the number of defective lightbulbs found in each trial. What is the mean number of defective lightbulbs for the five trials?

$1$

A) 4

B) 4.2

C) 4.6

D) 5

A group of students voted on five after-school activities. The bar graph shows the number of students who voted for each of the five activities. How many students chose activity 3 ?

$2$

A) 25

B) 39

C) 48

D) 50

15, 14, 18, 17, and x.
The mean and the median of the five numbers above are equal. Which of the following is NOT a possible value of x ?

A) 6

B) 11

C) 16

D) 21

Which of the following statements about the means and medians of data set A and data set B is true?

$4$

A) Only the means are different

B) Only the medians are different

C) Both the means and the medians are different

D) Neither the means nor the medians are different

The table shows the frequency of values in a data set. What is the minimum value of the data set?

$5$

A) 20

B) 19

C) 22

D) 24

For which of the following data sets is the mean greater than the median?

A) 12, 15, 5, 6, 20, 18 and 23

B) 0, 10, 20, 30, 40, 50, 60, 70, and 80

C) 2, 4, 8, 16, 32, 64, 128, 256, and 512

D) 7, 107, 107, 207, 207, 207, 307, 307, and 307

In the table above, Melissa recorded the price of one gallon of regular gas from five different local gas stations on the same day. What is the median of the gas prices Melissa recorded?

$7$

A) $3.68

B) $3.69

C) $3.70

D) $3.73

A data set of 27 different numbers has a mean of 33 and a median of 33. A new data set is created by adding 7 to each number in the original data set that is greater than the median and subtracting 7 from each number in the original data set that is less than the median. Which of the following measures does NOT have the same value in both the original and new data sets?

A) Median

B) Mean

C) Sum of the numbers

D) Standard Deviation

20, 64, 8, 17, and x. The mean and the median of the five numbers above are equal. Which of the following is NOT a possible value of x ?

A) 23.65

B) 29.36

C) 27.25

D) 29.89

Data set A consists of the heights of 75 objects and has a mean of 25 meters.
Data set B consists of the heights of 50 objects and has a mean of 65 meters.
Data set C consists of the heights of the 125 objects from data sets A and B.
What is the mean, in meters, of data set C?

A) 47

B) 45

C) 43

D) 41