HISTOGRAM: 3. The following is the IQ scores for 40 randomly chosen fifth graders in 2012. 108 113 126 99 117 119|102 109 129 109 13011281 13890 105 80 123 100135 140 103 133 127 139 99 114129 108 132 118 113 114 128 11098 127 120 93 85 numesical A. What type of data is this (Categorical or Numerical)? Use the calculator to help you draw a histogram for this IQ data. Full detail steps for using the Ti-83/84 calculator to draw a histogram given in the Chapter 11 notes.

A researcher randomly purchases several different kits of a popular building toy. The following table shows the number of pieces in each kit in the sample. Find the mean of the data. Round your answer to the nearest hundredth, if necessary. Building Toy Pieces 152 37 257 342 342 37 96 288 257 101 162 200 Copy Data

The following refer to the following data set: 43 49 26 76 96 66 35 49 81 73 What is the mean (¯xx¯) of this data set?mean =  (Please show your answer to one decimal place.)What is the median of this data set?median = What is the mode of this data set?mode =

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The top 16 winning scores for NFL games are listed below. Find the mean score.   Video Tutorial: How to find the mean on a TI-84   72 54 52 54 70 51 56 58 58 52 51 63 51 48 52 61     A. 54   B. 57.1   C. 63.2   D. 56.4

Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…

what is the mean of the data set?

A study was conducted to examine the impact of speaking in public on college students. A class of 15 statistics students participated in the study. At the beginning of a lecture the students recorded their systolic blood pressure. During the lecture the instructor called on each student to stand and answer questions about topics in the lecture. After speaking the students once again recorded their blood pressure. The resulting values are given below along with summary statistics. before 100 123 128 125 136 108 130 113 105 136 146 138 108 149 132 after 141 142 146 136 144 111 132 114 103 133 140 130 100 133 113 difference -41 -19 -18 -11 -8 -3 -2 -1 2 3 6 8 8 16 19   before after difference mean 125.1 127.9 -2.733 st dev 15.26 15.45 15.23 Does this information indicate that blood pressure increased because of speaking? Conduct an appropriate hypothesis test and show appropriate steps. Let μ1 mean systolic blood pressure before speaking in public, and μ2 mean…

Find the mean, median, and mode Scores F 95-99 10 90-94 20 85-89 25 80-84 28 75-79 12 70-74 8

Suppose 6 students take an exam, and the mean score is 82.5. Five of the student scores are as follows:95, 78, 85, 56, and 96. What is the sixth student’s score?