Reference no: EM132950572
Please round answers to two decimal pointsA. should not be used for nominal data
1) A grouped distribution:
B. is best for showing each individuals exact score
C. is preferred when there are 7 or fewer data points
2) If you're working with this set of squared deviations: 36, 25, 1, 9, 81
What is the sample standard deviation?
3) A researcher wants to know which amount of time-10 minutes, 30 minutes, or 60 minutes-spent in her waiting room will result in the most participant complaints.
Which variable is the independent variable?
A. the amount of time spent in the waiting room
B. the number of participant complaints
C. the number of participants who leave
D. There is no independent/dependent variable involved here, because this is a correlation study.
4) What is the mode of this number set? 90, 59, 62, 79, 83, 59, 79
If your answer is "there is no mode" then enter 0 as your answer; if your answer is that there are multiple modes, then enter the lower mode, then a decimal point, then the higher mode (like 11.92)
3) Which of the following frequency distributions would be best for graphing:
A grouped distribution of the lengths of various ropes, with 9 data points
A. frequency polygon
B. histogram
C. bar graph
4)A distribution of biology test scores with a normal distribution and a class average/mean of 74 would most likely show:
A. That most of the students got a "C" on the test.
B. That probably only 2-3 students got a "D" or an "F" on the test.
C. That probably only 2-3 students got a "D" or an "F" on the test.
D.That most students scored near the "A" and "B" grades.
5) If you're working with this set of squared deviations: 64, 36, 1, 49, 64
What is the sample standard deviation?
6) f you're working with this set of raw scores: 2, 13, 15, 19, 6
What are the squared deviations?
7) Please select whether this study would use descriptive, or inferential statistics.
A researcher wants to know if the number of times a dog barks in one minute will influence the likelihood that it will bite.
8) Which measure of central tendency would be best for summarizing this data?
A distribution of the number of soccer balls each member of a soccer team owns, where most members have 2-5 balls, a few have 0, and a few have 7-8 balls..
A. Mean
B. Mode
C. median
9) Tyson takes a 40-question test and gets 30 questions right, which is the highest score in the class. His percentage score is:
A.75
B.30
C.99
D.40
10) Please select the correct level of measurement for this variable:
your academic class (e.g. freshman, sophomore etc.)
A. Ordinal
B.Nominal
C. Interval/ratio
11)Please select whether this study would use descriptive, or inferential statistics.
A researcher wants to know how many people live on Crestmoor Ave.
12)If you're working with this set of raw scores: 10, 3, 14, 16, 7
What are the deviations?
A. 0, -7, +4, +6, -3
B. 0, 7, 4, 6, 3
C. 0, +7, -4, -6, +3
D.0, +7, -4, +6, -3
13) Tyson takes a 50-question test and gets 30 questions right, which is the average score for the class. His raw score is:
A. 30
B.about 50
C.exactly 50
D. 60