Unit 5 Mastery Quiz 1

Mathematics
Common Core

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10 questions
• Q1
A restaurant owner wants to know how often the customers in her restaurant eat out. Which sample will likely give the most reliable results?
50 male customers arriving at different times two days in a row
100 customers selected at random, arriving at different times each day for the duration of 1 week
The first 50 customers who come into the restaurant on Monday
Every 10th customer to come into the restaurant on a randomly selected Saturday
120s
• Q2
A restaurant owner wants to know how often the customers in her restaurant eat out. Which sample will likely give the most reliable results?
Every 10th customer to come into the restaurant on a randomly selected Saturday
50 male customers arriving at different times two days in a row
The first 50 customers who come into the restaurant on Monday
100 customers selected at random, arriving at different times each day for the duration of 1 week
30s
• Q3
Mr. Wynn gave the same test to his morning class and his afternoon class. Their scores are listed below: Morning class: 96, 76, 90, 88, 90, 93, 79, 80, 82, 86 Afternoon class: 70, 78, 80, 78, 86, 90, 76, 72, 70, 79 What is the mean of the morning class’ scores?
779 Points
77.9 Points
860 Points
86 Points
120s
• Q4
The test scores of the students in Mr. Duffy’s class are shown on the line plot below. The range in Ms. Guzman’s class was larger than Mr. Duffy’s class. Which line plot could represent the scores in Ms. Guzman’s class?
C
A
D
B
120s
• Q5
The frequency chart shows the distribution of defects for the machines used to produce chocolates. Which dot plot represents the frequency table?
D
C
A
B
120s
• Q6
The students in Mr. Warnock’s class collected cans for recycling one week. Below is the data for each group. Group A:11, 9, 12, 14, 8, 7, 13, 15, 12, 9 Mean = 11 Group B: 18, 12, 26, 14, 9, 19, 21, 24, 15, 12 Mean = 17 What is the difference in the MAD between Group A and Group B?
4.6
2.4
6
2.2
120s
• Q7
There is a 20% chance that customers at a café will order pie. If the café has 420 customers this week, how many can be expected to not order pie?
84 People
336 People
33.6 People
8.4 People
120s
• Q8
What is the difference between the median for each data set shown in the box plot below?
2
4
6
3
120s
• Q9
Which survey would result in a biased sample?
Every 4th person at a football game is asked to name their favorite sport.
Every 5th person in a library is asked whether they prefer red or green apples
Every 10th person at a train station is asked to name their favorite action movie.
Every 8th person on the street is asked whether they have a pet.
120s
• Q10
Jayshawn surveyed the students in his class to determine how they scored in a game. He displayed his results in the table shown below. Which histogram represents the data in the table?
D
A
C
B
120s

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