Reference no: EM1390013
1.) A researcher has been measuring the time for pairs of 8 year olds who have just met each other to work together to solve a problem. Using the following set of times to first disagreement (minutes) for each pair to answer the following questions:
scores: 30, 33, 40, 37, 32, 33, 40, 41, 34, 40, 31, 34, 34, 39, 37, 40, 35, 41, 41, 40.
a. Construct a distribution table for these data. include the colums and values for proportion and percentage.
b. Construct a frequency distribution histogram graph for the data.
c. Construct a stem and leaf plot for these data.
2.) Dr. I.C. Ewe has collected reaction times (in seconds) for an eye tracking test with individuals who have been given an experimental drug. your job is to organize the data for Dr. EWE.
Reaction times: 15, 51, 59, 41, 43, 33, 64, 78, 46, 38, 52, 47, 57, 54, 41, 20, 66, 45, 32, 37.
a. Construct a frequency distribution table for these data. Be sure to explain your selection of a tabular vs. grouped distribution table. Include in your table columns for proportion and percent.
b. Draw graph of these data. Be sure to explain your selection of the type of graph you use.
c. Construct a table with cf and c%
d. What scores has a percential rank of 60%?
e. What score has a percentile rank of 50%?
f. What is the percentile rank for X= 45?
g. What is the percentile rank for X= 32?
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Distribution table-histogram-stem-and-leaf plot
: A researcher has been measuring the time for pairs of 8 year olds who have just met each other to work together to solve a problem. Construct a distribution table for these data. include the colums and values for proportion and percentage.
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