Unit Test — Unit test Answers

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The dot plot shows the number of emails Aaron sent his cousin each week. Number of Emails Each WeekWhere is the gap in the data?

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Which is an example of a statistical question?QuestionsQuestion 1How many pets does Alisha have at home? Question 2How old were you when you got your first pet?Question 3Do you like having a pet? Question 4What is Alisha’s pet’s name?

question 1

question 2

question 3

question 4

Sammi wanted to create a dot plot based on this tally chart. In which step, if any, did Sammi make a mistake creating his dot plot?Steps to Create a Dot PlotStep 1Create a number line.Step 2Title the Dot PlotStep 3Plot the Points

Sammi made a mistake in Step 1 because his number line did not include all numbers in the data set.

Sammi made a mistake in Step 2 because he chose a title without knowing if the table represents the number of hours read per week.

Sammi made a mistake in Step 3 because he did not correctly plot each dot above the appropriate place on the number line.

Sammi did not make a mistake.

Ari’s teacher says he may have his report grade based on either the mean or the median of his last six test scores. 88%, 73%, 97%, 76%, 90%, 80%Which measure of center would best represent Ari’s grade?

the mean

the median

both the mean and the median

neither the mean nor the median

Pren recorded this data set, which contains an outlier. 204, 216, 111, 224, 230, 211, 210, 198, 200, 218What numbers represent the range, lower quartile, and upper quartiles?

range: 210.5lower quartile: 200upper quartile: 218

range: 14lower quartile: 111upper quartile: 198

range: 119lower quartile: 218upper quartile: 200

range: 119lower quartile: 200upper quartile: 218

The table below shows the deliveries for Floral World for the week. What is the mean, or average, number of deliveries per day?Floral World DeliveriesMonday13Tuesday15Wednesday17Thursday19Friday16

What percentage of the data values represented on a box plot falls between the lower quartile and the upper quartile?

25%

33%

50%

75%

Which dot plot shows three people that sleep for eight hours at night and three people that sleep for six hours at night?

A dot plot titled How many Hours do you Sleep at Night question mark going from 5 to 9. 5 has 3 dots, 6 has 3 dots, 7 has 3 dots, 8 has 2 dots, and 9 has 3 dots.

A dot plot titled How many Hours do you Sleep at Night question mark going from 5 to 9. 5 has 3 dots, 6 has 2 dots, 7 has 3 dots, 8 has 3 dots, and 9 has 3 dots.

A dot plot titled How many Hours do you Sleep at Night question mark going from 5 to 9. 5 has 2 dots, 6 has 3 dots, 7 has 4 dots, 8 has 4 dots, and 9 has 1 dot.

A dot plot titled How many Hours do you Sleep at Night question mark going from 5 to 9. 5 has 2 dots, 6 has 3 dots, 7 has 4 dots, 8 has 3 dots, and 9 has 1 dot.

Alicia received the following seven scores on her math assignments. 80, 90, 10, 75, 90, 95, 99Find the mean and median. Which measure of center best represents the data?

the mean

the median

both the mean and the median

neither the mean nor the median

Which describes how to calculate the range of this data set?4, 5, 6, 8, 11, 12

Subtract .

Add .

Which dot plot is most strongly skewed right?

Number of Movies Seen at the Theater This Year

A restaurant records the number of tables served each night, and the results have the values: minimum = 3, lower quartile = 14, median = 23, upper quartile = 29, and maximum = 40. Which box plot represents the data?

Option

The histogram shows how many jogging runs Maria made for each interval of miles. Which statement about the histogram is true?

The majority of Maria’s runs were short, two-mile runs.

More than half Maria’s runs were less than five miles each.

The majority of Maria’s runs were between five and six miles.

At least 15 of Maria’s runs were more than four miles each.

Kellan collected two sets of data and recorded them in the table. Set 1Set 217811370189424682195Which set has a wider spread, and what is the range?

Set 1 has a wider spread and has a range of 3.

Set 1 has a wider spread and has a range of 11.

Set 2 has a wider spread and has a range of 14.

Set 2 has a wider spread and has a range of 27.

Plot A shows the number of hours ten girls watched television over a one-week period. Plot B shows the number of hours ten boys watched television over the same period of time.Television Viewing Hours for a One-Week PeriodWhich statement correctly compares the measures of center in the two sets of data?

Both the mean and median are greater for Plot A than for Plot B.

Both the mean and median are greater for Plot B than for Plot A.

Plot A has a greater median than Plot B, but Plot B has a greater mean.

Plot B has a greater median than Plot A, but Plot A has a greater mean.

The interquartile range of the data set is 4.2, 2, 3, 3, 4, 5, 5, 6, 7, 9, 12Which explains whether or not 12 is an outlier?

Twelve is an outlier because it is greater than the sum of 7 and 4.

Twelve is an outlier because it is less than the sum of 7 and 6.

Twelve is not an outlier because it is greater than the sum of 7 and 4.

Twelve is not an outlier because it is less than the sum of 7 and 6.

A variety of two types of snack packs are delivered to a store. The box plots compare the number of calories in each snack pack of crackers to the number of calories in each snack pack of trail mix.Which statement is true about the box plots?

The interquartile range of the trail mix data is greater than the range of the cracker data.

The value 70 is an outlier in the trail mix data.

The upper quartile of the trail mix data is equal to the maximum value of the cracker data.

The number of calories in the packs of trail mix have a greater variation than the number of calories in the packs of crackers.

The weights of six animals at the zoo are shown in the table below.Weights of Animals (pounds)52438526685What is the mean absolute deviation? Round to the nearest tenth.

Answer not available

What is the center of the data in the dot plot?Number of Science Homework Assignments Each Week

2.5

What is true of the data in the dot plot? Check all that apply.Number of Minutes for Each Commercial Break

The center is 3.

The peak is 5.

There are no gaps.

It is symmetric.

It is skewed right.

The spread is from 1 to 5.

There were 14 commercial breaks.

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