SP.A.1-2 & SP.B.3-4 Review

The administrator at the local amusement park wants to estimate attendance for the upcoming year. To get an estimate, she multiplied the attendance on opening day last year by the number of days the amusement will open this year. Will the administrator have conducted a valid claim?

• Yes, because the same number of people come every day.

• 
  Yes, because everyone comes to the amusement park on opening day.

• No, because no one goes to the amusement park on opening day.

• No, because more people come on opening day than the other days.

Tags

CCSS.7.SP.A.2

The Helms Candy Co. wants to know which flavor of candy people aged 18-21 prefer. Which group would be the best to sample to achieve accurate results?

• 
  A group of parents who have high school and college aged kids.

• A group of five students from each high school and college class in a city.

• Every high school-aged girl in a school district.

• A group of 1,000 people who graduated high school before the year 2000.

Trinity has a large jar full of hundreds of quarters. She looked at a random sample of 50 quarters and recorded which state was shown. 15 quarters showed Tennessee, 10 quarters showed Georgia, 12 quarters showed California, and 13 showed Maine.

What can we infer about the quarters in Trinity's jar?

• 
  The least amount of quarters came from Tennessee.

• One-fifth of the quarters showed Georgia.

• Exactly 1/2 of the quarters showed California and Maine.

• There are 3 more quarters that showed Tennessee than California.

Todd took a survey of two different sets of 100 classmates to see what their favorite sports are and displayed the results in the table.

Which inference can be drawn based on the results?

• Students prefer soccer over football.

• Students preferred basketball over all sports.

• Students prefer football over soccer.

• More students prefer football than soccer and basketball combined.

Elian is part of a nature watching club and keeps track of the box turtles in a local park's lake. To do so, he puts tags on 25 box turtles and releases them. Later, he catches 150 box turtles; 10 box turtles were tagged.

What is the best estimate for the box turtle's population?

Enter only numbers.

The number of articles of clothing owned by people at two tables is shown in the chart.

Which statement(s) about the means of the data sets is/are true?

• The mean number of articles of clothing owned by people at table 1 is greater than the mean number of articles of clothing owned by people at table 2.

• The mean number of articles of clothing owned by people at table 2 is greater than the mean number of articles of clothing owned by people at table 1.

• The mean number of articles of clothing owned by people at table 1 is greater by

  8 1/4 articles of clothing than table 2.

• The mean number of articles of clothing owned by people at table 1 is equal to that of table 2.

Donald and Nina each took five math tests. The table shows the grades for each test.

What is the difference in Nina’s range of scores and Donald’s range of scores?

• 24

• 10

• 15

• 5

Which statement(s) about the scores from the Rams and the Wolves is/are true?

• The difference in the medians is about 1/5 times the range in the Ram's scores.

• The difference in the medians is about 1/8 times the range in the Wolve's scores.

• The median scores from the Rams are about 6/7 times the median scores from the Wolves.

• The median scores from the Wolves are about 1 & 1/6 times the median scores from the Rams.

Tags

CCSS.7.NS.A.3

Select all that are FALSE.

• Group 1 and 2 have the same Q1.

• Group 1 has a higher median.

• Group 1 and 2 both have outliers.

• Group 2 is quicker at solving the puzzle.

Which statement is true about the variability of the data.

• The data from Store 2 shows more variation because it stretches farther to the left.

• The data from Store 1 shows more variation because it stretches farther to the right.

• The data from Store 1 and Store 2 show that the IQR's are almost equal, but Store 2 has a higher amount of sales in dollars.

• The data from Store 2 shows more variation because the values are more spread out, whereas Store 1 values are more centered.